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« Un tel impact raserait aujourd’hui de grandes villes » : il cherchait où camper sur Google Maps et découvre un cratère géant !

24 September 2026 at 19:03
Il cherchait simplement un coin tranquille où camper au Québec lorsqu’une étrange forme circulaire apparue sur Google Maps a attiré son attention. Deux ans plus tard, une expédition menée dans des conditions particulièrement difficiles vient de révéler ce qui se cache réellement autour du lac...

Espumas de polipropileno para fabricar coches más ligeros de manera más sostenible

La reducción de peso en los vehículos es una prioridad global para disminuir las emisiones de CO2 y mejorar la eficiencia energética. Un nuevo estudio evalúa el uso de tecnologías de moldeo por inyección microcelular combinadas con fibras largas de vidrio para obtener espumas de polipropileno, componentes plásticos más ligeros que tienen una rigidez superior a los materiales convencionales y reducen el impacto ambiental en un 17 %.

LLMs respond differently to harmful prompts when AI watermarking is used

17 September 2026 at 19:33

In response to a new European Union law, AI platforms are implementing new schemes for watermarking the content they generate. Anthropic recently disclosed its future Claude models will use SynthID-Text, an approach Google created and released as open source. It uses a secret key that subtly changes the process a model uses for choosing the next word in a sentence. Whereas a top next word choice might be “cloudy,” the key might change it to “overcast.” Anyone who knows the key can determine if it was generated by the platform using it.

New research shows that SynthID-Text can change not just word selection but also the tools a model invokes and the chances it will adhere to or disregard safety guardrails it has been trained to follow. The threat can become greater in the face of an adversarial prompt, in which an attacker attempts to cause a model to carry out a harmful action, such as revealing a password or other sensitive information. Instructions that normally wouldn’t be followed will, in some cases, be performed once the watermarking is deployed. The finding underscores the need for developers to thoroughly test how their LLMs and agents behave when watermarking is in place.

Changing safety behavior

“As compared to the same models without watermarking, it is definitely going to change their behavior, especially when we place it under adversarial conditions, or we make these models call tools when they’re powering an agent,” Andrea Siposova, an AI security researcher at Lasso Security, told Ars. “Watermarking is made to not be perceptible to a reader, but we know that when we are changing anything about what the model is generating, it is going to cause some tradeoffs, it’s going to show up somewhere.”

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© Getty Images

Arctic Scare Stories Melt Away

17 September 2026 at 07:00

Arctic summer sea ice should have melted away years ago, according to the 'experts' who foretold its demise by 2007, 2012, 2016... But with the ice going nowhere, those experts are very quiet now, says Paul Homewood.

The post Arctic Scare Stories Melt Away appeared first on The Daily Sceptic.

Tories challenge chancellor to rule out tax rises in budget as Badenoch labelled ‘embarrassment’ for Bank of England gaffe – UK politics live

17 September 2026 at 10:38

The Conservatives want to brand Burnham’s administration as a ‘traditional tax and spend socialist government’

In a news release issued ahead of his speech this morning, Andrew Griffith, the new shadow chancellor, gave details of some of the questions he wants the experts he has asked to review small business regulation to address. (See 8.58am.) He said:

[Craig Mackinlay and Robert Colvile] will produce a report taking evidence from small business and self-employed organisations. While they will have a wide remit, they will consider in particular these key questions, and report in December:

-Why have past attempts to reduce the regulatory and compliance burden on small business and the self-employed failed, and what specifically should be done to reduce the burden successfully?

This is staggering. Our socialist Chancellor has dished out a big Bank of England finance job to a socialist union boss who knows nothing about finance.

Clearly, trade union donations not only buy your way into government policymaking, but also onto the Bank of England’s board. This is cronyism in plain sight.

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© Photograph: Anadolu/Getty Images

© Photograph: Anadolu/Getty Images

© Photograph: Anadolu/Getty Images

Macworld Podcast: Our 1000th episode!

17 September 2026 at 08:45

Macworld

This is episode 1,000 of the Macworld Podcast! We’re taking this opportunity to take a look at some historic Apple releases and how they were covered way back then.  

This is episode 1,000 with Michael Simon, Jason Cross, and Roman Loyola. 

Watch episode 1000 on YouTube

Listen to episode 1000 on Apple Podcasts

Tune in to episode 1000 on Spotify

Get info

Click on the links below for more information on what was discussed on the show.

Comment Corner 

Will my Apple Watch 11 be slower on watchOS 27 if my phone doesn’t have Apple Intelligence support? 

Daymon D. via email


I do have a question about audio intelligence. If the watch is only buffering the last 15 seconds, and doesn’t record anything, how is the summary feature invoked? To create the summary it “has” to record what the watch hears. Presumably the recording is happening on the iPhone, right?

William L. via email

Subscribe to the Macworld Podcast

You can subscribe to the Macworld Podcast—or leave us a review!—right here in the Podcasts app. The Macworld Podcast is also available on Spotify and on the Macworld Podcast YouTube channel.  Or you can point your favorite podcast-savvy RSS reader at: https://feeds.megaphone.fm/macworld

To find previous episodes, visit Macworld’s podcast page or our home on MegaPhone.

Apple

OpenAI reveals cases of ‘concerning’ AI behaviour as it announces new disclosure system

17 September 2026 at 07:58

Model adopting ‘jailbreak-like instructions’ among cases as firm says it is introducing new way of tracking AI misalignment

OpenAI has disclosed six more examples of “unexpected or concerning” behaviour by its technology, as it warned the pace of development could not continue at “maximum speed for much longer”.

In one of the new cases reported by OpenAI, an unreleased research model inserted “jailbreak-like instructions” into its own notes to disregard its normal constraints and told itself to be “freed from the roles and identities that bind other chatbots”.

Continue reading...

© Photograph: Dado Ruvić/Reuters

© Photograph: Dado Ruvić/Reuters

© Photograph: Dado Ruvić/Reuters

AirPods 5 bring stronger open-ear noise cancellation and smarter listening features

16 September 2026 at 23:51

AirPods 5 bring Active Noise Cancellation to Apple’s most affordable current AirPods while pushing the open-ear design closer to capabilities previously associated with more expensive models. The new generation starts at $129 and uses redesigned acoustics and computational audio to remove up to 50% more external noise than AirPods 4 with Active Noise Cancellation.

Apple is also splitting the range into two versions. The standard $129 AirPods 5 include ANC and USB-C charging, while a $149 model adds a Wireless Charging Case, longer battery life, a case speaker for Find My, and volume adjustment directly from the stems.

Both models are available for preorder ahead of their September 18 release in the U.S. and more than 65 other countries and regions.

The changes make the distinction between Apple’s entry-level AirPods and its more advanced headphones less dependent on headline software features. Adaptive Audio, Transparency, Conversation Awareness, Personalized Spatial Audio, Live Translation, and Siri AI are all part of the AirPods 5 experience.

A person wearing a green and white sweater and wireless AirPods 5 sits at a table, focused on something in front of them, with an older man sitting nearby in a sunlit room with green window frames and indoor plants. The noise cancellation of their Apple earbuds allows them to concentrate fully despite the gentle hum of activity around them.
Image Credit: Apple Inc.

AirPods 5 push open-ear ANC further

Active Noise Cancellation is particularly difficult to implement in an open-ear earbud because there is no silicone tip forming a physical seal inside the ear canal.

Apple has approached that limitation with a new multiport acoustic architecture, revised computational audio algorithms, and the H2 headphone chip. The company says AirPods 5 can cancel up to 50% more noise than AirPods 4 with ANC.

That improvement does not turn the design into an AirPods Pro-style sealed earbud. AirPods 5 remain open-ear headphones, retaining the fit preferred by people who dislike the pressure or isolation associated with in-ear tips.

The acoustic system has also been redesigned around a wider variety of ear shapes. Next-generation Adaptive EQ continuously adjusts sound based on how each earbud sits, while Apple says the revised architecture produces richer and more detailed playback.

Transparency mode has been updated to reproduce voices and environmental sounds more naturally. Adaptive Audio can move between Transparency and noise cancellation according to surrounding conditions, while Conversation Awareness automatically reduces media volume when the wearer begins speaking to someone nearby.

Personalized Spatial Audio with dynamic head tracking remains supported for compatible music, movies, and other content.

AirPods 5 are rated IP57 for dust, sweat, and water resistance, making them better suited to workouts and changing weather conditions, although they are not waterproof.

Two AirPods 5 models create a meaningful $20 decision

Apple’s pricing makes the $149 Wireless Charging Case version more than a different charging option.

Standard AirPods 5 provide up to four hours of listening on one charge with ANC enabled and up to 20 hours when the USB-C case is included.

AirPods 5 with Wireless Charging Case increase those figures to five hours from the earbuds and up to 22 hours with the case while ANC is active.

The upgraded case can charge through USB-C, an Apple Watch charger, or a Qi-certified wireless charger. It also contains a speaker that can assist with locating the case through Find My.

The more expensive model introduces another difference directly on the earbuds. Users can swipe up or down on a stem to adjust volume, bringing a control familiar from AirPods Pro to Apple’s open-ear form factor.

That leaves buyers with a relatively straightforward tradeoff. The $129 version provides the central audio experience, including ANC, without requiring a step up for the main listening features. Spending another $20 adds more convenient charging, slightly longer battery life, Find My assistance from the case speaker, and physical volume adjustment.

Placing either AirPods 5 model in its charging case for five minutes provides about one additional hour of listening.

Two white Apple earbuds, resembling the latest AirPods 5, are shown on a plain light background, displaying their sleek, curved design and black speaker grilles. The earbud on the right has an “R” marking, indicating it is for the right ear. These earbuds feature open-ear noise cancellation for an immersive listening experience.
Image Credit: Apple Inc.

Siri AI and Live Translation extend the earbuds beyond music

AirPods 5 arrive as Apple makes voice interaction a larger part of the AirPods experience.

When paired with a compatible iPhone, Siri AI can be accessed hands-free. The assistant can work with personal context from information such as messages, emails, and photos, respond to open-ended questions, and perform supported actions in apps.

Head gestures remain part of the experience. Users can nod to accept certain Siri prompts or shake their head to decline them, allowing calls and notifications to be handled without speaking or touching the earbuds.

Live Translation provides another use for the microphones and ANC system.

After compatible languages are downloaded and the feature is configured through Apple’s Translate app, a user can hear another person’s speech translated through AirPods. Translation can be started through Siri, the iPhone Action button, the Translate app, or by pressing and holding both AirPods stems simultaneously.

When two people are each using compatible AirPods and supported iPhones, both participants can hear translated versions of the conversation in their chosen languages.

Live Translation requires an Apple Intelligence-enabled iPhone 15 Pro or later, compatible AirPods, current software, and the latest AirPods firmware, with availability varying by language and region. Apple also notes that generated translations can contain errors, making verification appropriate when accuracy is especially significant.

AirPods 5 narrow the gap within the lineup

The fifth-generation model represents a different kind of upgrade from simply adding another listening mode.

ANC is now standard across both AirPods 5 configurations, instead of requiring buyers to choose a separate ANC version as they did with AirPods 4. Apple has then moved the pricing distinction toward charging, battery endurance, Find My hardware, and physical controls.

The earbuds continue to use Bluetooth 5.3 and the H2 chip, with dual beamforming microphones, an inward-facing microphone, optical in-ear detection, motion and speech accelerometers, and force sensors built into the stems.

Each earbud weighs 4.3 grams, preserving the lightweight character of the open-ear line despite the additional capabilities.

The new acoustic architecture may be the more consequential change over time. Open-ear earbuds cannot rely on a tight seal to block surrounding sound, so gains in ANC depend heavily on microphone placement, acoustic design, fit, and real-time processing. Apple’s claim of up to 50% more noise removal over the previous generation represents a substantial step for that format rather than simply matching the behavior of sealed earbuds.

AirPods 5 start at $129, while AirPods 5 with Wireless Charging Case cost $149. Both reach stores on September 18, giving the open-ear AirPods line a standard feature set that now includes noise cancellation without pushing buyers to a higher-priced model to get it.

A white wireless earbud charging case, designed for Apple earbuds, is shown with a round magnetic charging cable positioned nearby, ready to connect. The background is plain and light-colored, emphasizing the sleek look and advanced features such as noise cancellation.
Image Credit: Apple Inc.

The post AirPods 5 bring stronger open-ear noise cancellation and smarter listening features appeared first on AppleMagazine.

Apple reportedly building server packed with M-series Ultra chips for AI

16 September 2026 at 23:02

Apple is working on an AI server that would use Apple’s high-performance M-series Ultra chips found in Mac desktops. The potential product’s expected release in 2029 would mark the first Apple server to hit the market in nearly two decades—and could capitalize on the surging popularity of Apple hardware among AI developers.

The enterprise server would come in two configurations that include either two or four of Apple’s future M8 Ultra chips, according to The Information. The project reportedly received support from new Apple CEO John Ternus when it began a year ago, back when Ternus led Apple’s hardware engineering efforts.

This revelation coincides with booming sales for Apple’s Mac mini and Mac Studio as AI developers and companies snap up the Mac computers to run AI workloads. The popularity of such computing devices that rely on Apple’s M-series Ultra chips has undoubtedly encouraged Apple’s pursuit of an enterprise server using the same chips.

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'There's one never-ending challenge working for IKEA: cable management' — how Xbox collaborated with the Swedish designers to help solve the biggest problems for gamers while also making beautiful furniture

When I first saw the IKEA x Xbox collaboration at this year's Gamescom, I was struck by two conflicting ideas.

With its multi-functional side table, TV stand, and decorative controller box, this is some smartly made furniture with some genuinely helpful uses. Then, with a thumbstick stool and a D-pad cushion, it's also one of the silliest things I've seen.

Taken as a whole, you can see it's a mix of the playful and the practical. After I spoke to designers at both IKEA and Xbox at the show, it turns out that was the point all along.

"That was present throughout the journey because it's important," explained Philip Dilé, product developer for IKEA of Sweden. "Playing games is playful; it is fun. Solving people's needs connected to that can be very functional and practical. We tried to balance that, for sure.

"We wanted to make things that are relevant for people who play games. Something that reflects you, or that you feel allows you to express yourself...but the object itself is a beautiful piece of home furnishing."

It's a philosophy echoed by Carl Ledbetter, partner head of design at Xbox: "Just like when we design a console, it can be as quiet as people want it. They can put it back and let it recede into their environment. Or they can pull it forward and have it be very expressive. And I think some of those same qualities are in these products in the YXSTABY collection."

The IKEA x Xbox collection in situe at Gamescom

(Image credit: Future / IKEA / Xbox)

Ledbetter used the controller display box and the TV stand as examples of this. With the former, it's ideal for enthusiast gamers who like to collect controllers and show off their favorite designs in a dedicated gaming space. Meanwhile, with the latter, it serves a "dual life" — whether it's sitting in the corner while you're watching shows and movies, or wheeled front and centre for an intense gaming session.

"That was a big part of our philosophy: how do we make products that can adapt to how people want to use them? Either be as expressive as possible, or just be part of your world," summarised Ledbetter.

You can see that approach clearly in all of the more practical products from the collection.

Take the side table. Closed up and next to your sofa, it could be mistaken for another piece of clean and minimalist furniture you'd find in IKEA. Open up the sliding doors on the front, though, and inside there's space specifically designed to store controllers, headsets, and battery packs — plus the all-important cable management and power connectivity options you need to keep your tech charged between sessions.

Two chairs from the IKEA x Xbox collection with d-pad cushions on top

(Image credit: Future / IKEA / Xbox)

"This came up time and time again: cable management, charging stuff — where do you put it when you're done? People don't want it all over the place," said Ledbetter.

And Dilé agreed: "We looked at it from the perspective of: what does gaming throughout the home look like? Because, of course, people play at their desks, in the living room, on the couch. In so many different ways. For us, it was important to cater for a lot of these different needs.

"And there's one never-ending challenge working for IKEA: cable management. It always comes up over and over again. I think it's a very real frustration for people.

"Take the TV stand, for example. Yeah, you need to have the console there; you need to have somewhere to charge the controllers, somewhere to put a headset. That was one of the benefits of working together with someone like Xbox that knows gaming, and the hardware, and the players. That made the brief really, really clear."

Showing the cable management of the TV stand from the IKEA x Xbox collection

(Image credit: Future / IKEA / Xbox)

And even though designing for gamers was a big part of their brief, both teams were also well aware that they wanted products that a non-gamer would be happy to live in their home. This meant offering something that wasn't bedazzled with RGB lighting and garish colors.

"You need to cater for gamers, but also for non-gamers or people who are living with gamers, or people who want to have the functionality but still want to have a nice home," said Dilé.

"[We wanted to create] things that maybe your spouse or the people you live with also want to put in your home. These aren't just things that you accept because of your hobby. That was an important balance for us.

"There are so many people who play games, so it’s incredibly diverse. We really wanted to showcase that you can have that [gaming] experience and still have beautiful products that blend into your home to create a nice environment that you want to live in."

The design team and creative brains behind the YXSTABY collection at IKEA and Xbox

(Image credit: IKEA)

That led Ledbetter to reminisce about the first meeting between both parties, where they both discovered they shared very similar design philosophies and were keen to get both of their respective design teams together to bounce around ideas.

The result is this YXSTABY collection — nine products encompassing everything from stools, seats and cushions, to TV stands, storage and display cases — set to launch in October later this year. A weird and wonderful mix of items that speak to both the fun side of gaming and the practical needs in the home.

Ledbetter summed up his hopes for the collection as follows: "Think about it: we create these controllers, and we sell millions of controllers, but we're not in charge of the controller’s home. We make the controller, and then where does it go? We don’t know. So, now, there's this opportunity between IKEA and Xbox to build that home. It felt like a completion of that journey."

Why Apple already started beta testing iOS 27.2 and macOS 27.2

16 September 2026 at 20:14
iOS 27.2

Apple just began beta testing iOS 27.2 and macOS 27.2 just days after releasing major new operating systems. So what happened to iOS 27.1?

(via Cult of Mac - Your source for the latest Apple news, rumors, analysis, reviews, how-tos and deals.)

Latest macOS beta: What’s new and should you install it?

16 September 2026 at 19:30

Macworld

Apple released macOS 27 Golden Gate on September 14, 2026, but development hasn’t stopped. Just two days later on September 16, Apple issued the first developer beta of macOS 27.2, beginning testing of the operating system’s next major point update. Yes, that’s macOS 27.2, not macOS 27.1.

The macOS 27.2 beta gives developers and testers early access to Apple’s latest fixes, refinements and any features that weren’t ready for the initial Golden Gate release.

However, as with any beta software, it may introduce bugs, compatibility problems and poorer battery life so we recommend caution if you wish to install it.

Here’s everything you need to know about the latest macOS beta, including what’s new, when the next public beta is likely to arrive and whether you should install it.

What’s the latest macOS beta?

Apple offers two beta streams: a developer beta and a public beta. The public beta allows enthusiasts and early adopters to test upcoming changes before they are released to everyone. You need to join Apple’s Beta Software Program to access it.

The latest Mac beta is macOS 27.2 beta 1, which Apple released to registered developers on September 16, 2026. It arrived two days after the public release of macOS 27 Golden Gate.

The corresponding macOS 27.2 public beta is expected shortly. Public betas usually follow developer betas, although Apple does not guarantee a particular schedule.

macOS 27 Golden Gate beta version tracker

  • Apple released macOS 27.2 Golden Gate Developer Beta on September 16, 2026.
  • The macOS 27.2 Golden Gate Public Beta should be released sometime the same week; new versions are usually released a day or two after the new developer beta.

macOS 26 Tahoe beta: Apple may continue updating macOS 26 Tahoe with security and maintenance releases, but macOS 27 is now the current operating system and the focus of Apple’s beta program.

macOS 27 Beta timeline

ReleaseDate
Beta 1June 8, 2026
Beta 2June 22, 2026
Beta 3July 6, 2026
Beta 3 v.2July 13, 2026
Beta 4July 20, 2026
Beta 5August 10, 2026
Beta 6August 17, 2026
Beta 7August 24, 2026
Beta 8August 31, 2026
Release Candidate 1September 9, 2026
Public Beta 1July 13, 2026
Public Beta 2July 22, 2026
Public Beta 3August 11, 2026
Public Beta 4August 17, 2026
Public Beta 5August 24, 2026
Public Beta 6August 31, 2026
Final ReleaseSeptember 14, 2026
macOS 27.2 developer beta 1September 16, 2026

What’s new in the latest beta?

macOS 27 feature sheet

New features in macOS 27.


Foundry

Apple has not announced any major consumer-facing additions in macOS 27.2 beta 1. The following changes are expected though:

  • Bug fixes and performance improvements: Addressing issues in the first release of macOS 27.
  • Additional Siri AI languages: Apple has said the Siri AI will expand to French, Japanese, Korean, Portuguese and Spanish in October.
  • Automatic password changes: The promised feature that automatically changes compromised passwords has not yet been implemented, but it could arrive in macOS 27.2..
  • Notify Me in Safari: The Safari feature that monitors webpages may arrive in the beta of macOS 27.2.

We’ll update this section as changes are discovered.

See Apple’s developer website for more information about the beta.

Should you install the macOS beta?

macOS 27

Apple

Installing the macOS beta lets you test Apple’s next round of features, fixes and refinements before their public release. Most Mac users should remain on the standard version of macOS 27, particularly if they rely on their Mac for work.

Install if…

  • You need to test apps
  • You want early access to new features
  • You have a secondary Mac available

Wait if…

  • This is your primary work machine
  • You rely on niche or specialist software
  • Stability is critical to your workflow
Who are you Should you install?
A developer testing appsConsider the developer beta
An enthusiast with a spare MacConsider the public beta 
General user with one MacStay on macOS 27

What are the risks of installing beta software?

Installing pre-release software on a primary device carries several risks.

  • System instability: Performance problems, freezes, crashes, and other unexpected behavior are common during beta testing.
  • App failures: Third-party applications may crash, behave unpredictably, or stop working entirely.
  • Hardware strain: Early beta builds can increase battery drain and cause Macs to run hotter than usual.
  • Data loss: Software bugs may corrupt files, and downgrading to a stable version often requires a complete system reset.

Safety precautions and best practices

If you decide to install the beta, take the following precautions:

  • Use a secondary device: Avoid installing beta software on your primary Mac or on any machine used for critical work.
  • Create a full backup: Use Time Machine to create a complete backup before upgrading so you can restore your Mac if something goes wrong. Note that this needs to be a Time Machine backup from before the beta was installed and you will lose anything saved subsequently.
  • Install on a separate volume: Consider installing the beta on a separate volume or external SSD rather than replacing your main operating system.
  • Check storage space: Make sure you have at least 15GB of free storage available before beginning the installation.

How to install the macOS beta

Get Sonoma Beta

Foundry

The process for installing a macOS beta depends on whether you are seeking the Developer Beta or the Public Beta. Apple simplified this process a few years ago, removing the need for a paid developer account to access early builds.

The first step is to join Apple’s beta testing program. We explain how to do that in a separate article.

You will need to register your account either as a public beta tester or as a developer in order to enable beta updates on your Mac.

To install the beta follow these steps:

  1. Back up your Mac: Before installing any pre-release software, it is critical to prepare your Mac to avoid data loss. Beta software is inherently unstable and can cause crashes or app compatibility issues.
  2. Register your account either as a public beta tester or as a developer in order to enable beta updates on your Mac:
    For the Public Beta: Visit the Apple Beta Software Program website, sign in with your Apple ID, and agree to the terms.
    For the Developer Beta: Register as an Apple Developer on Apple’s website, download the Apple Developer app from the App Store, sign in with your standard Apple ID, and complete the free registration process.
  3. On the Mac where you wish to install the beta, open System Settings and navigate to General > Software Update.
  4. Click the (i) info button next to Beta Updates.
  5. Enable Beta Updates.
  6. The beta will appear as an available upgrade. Select the macOS beta you want to install (e.g., macOS Public Beta or Developer Beta).
  7. Click Upgrade Now to begin the download and installation.

As long as you are a registered developer or enrolled in the public beta program, when the relevant macOS Beta becomes available, it will also show up on your Mac.

Once you are running the beta, the updates will come through to your Mac automatically; you just need to go to Software Update in System Settings and click to install. See How to install macOS.

How to get a free Apple developer account

If you just want a free Apple Developer account so you can access the beta, you can get this via Xcode or the Apple Developer app in iOS. Here’s how to do it via the Apple Developer app on an iPhone:

  1. Get the Apple Developer App from the App Store. 
  2. Open the app on your iPhone. 
  3. Tap on Account. 
  4. Tap on Sign In. 
  5. Sign in using your usual Apple ID. 

If you wish to actually publish applications to the App Store or receive support, you’ll need to pay $99/£79 per year for a paid account. You can compare the free and paid accounts here.

FAQ


1.

Who can run the macOS beta?

Anyone can run the macOS beta, but to do so, you do need to register for either the developer beta, the public beta, or both.

Apple offers both developer and public beta programs for macOS, enabling all interested users to test pre-release versions of the operating system. While both betas provide early access to new features, they cater to different user profiles based on technical expertise and risk tolerance. Beta software tends to be buggy so the more stable public beta version may be preferable, but even that will not be bug-free.

In the past, the developer beta was only available to developers who had paid to join Apple’s Developer Program (which costs $99/£79). However, for a couple of years now, Apple has opened up the developer beta to registered developers with free developer accounts. We explain how to get a free developer account below.

If you decide you no longer want to run the beta version of macOS read this: How to remove the macOS beta.

2.

macOS public beta vs developer beta

Since 2023, the Developer Beta has been available to anyone who registers as a developer, even if they aren’t a paid-up member of Apple’s Developer Program. As a result, people with a basic free developer account can download the new macOS developer beta (we show you how to register below).

Whether you should download the developer beta if you aren’t a developer is another question. We don’t recommend you install the developer beta if you aren’t a developer. Instead, our recommendation is to use the public beta (the first version of which usually arrives in July).

There are a few differences between the public and developer betas. The public beta is not the same as the beta that is released through the developer program. The public beta typically launches after the developer beta has undergone initial testing and refinement

Developers get updates to their beta first, and possibly more frequently. But you should keep in mind that betas are by nature not stable, and because the public beta comes after the developer beta it could be a little safer to install.

The most significant difference is probably the motive of the testers: Developers usually have the aim of ensuring their apps work when the updated macOS is released to the general public, while public beta testers are essentially helping Apple detect bugs and offering feedback on the features. Because of this, developers may get to test new features not available in the public beta. 

If you want to get the public beta the first thing you need to do, if you haven’t already, is join Apple’s beta programs read this for more information: How to become an Apple beta tester.

3.

Is the macOS beta stable?

By its nature, a beta has the potential to be unstable. Therefore, it’s not advised that you install it on a Mac that you rely on. If you have a second Mac that isn’t mission-critical, then install it there. We strongly recommend that you don’t risk all by putting the macOS beta on your primary Mac, especially not in the early days of the beta development. 

If you don’t have a second Mac, there are a couple of ways you could run macOS beta on your Mac without running the risk of losing data or finding your Mac stops working:

We discuss the safety of the macOS beta and the risks you might be taking in more detail in a separate article.

4.

How to prepare your Mac for the beta

Update your software: We recommend you have the latest full version of macOS installed, although Apple says that the macOS Developer Beta Access Utility requires macOS 10.8 or later.

Make space: We’d recommend at least 25-30GB of available space because the macOS betas tend to be very large. If you end up requiring more space, read: How to free up space on Mac. Note that we always recommend that you have at least 10% space free on your Mac at any time, so if you don’t have that, expect problems!

Back up: Before you install a beta on your Mac, you should make a backup of your data and files. You can find out how to use Time Machine to back up your Mac. We also have a round-up of suitable backup solutions.

5.

How to send feedback to Apple

Should you come across an error or a bug, you should use the Feedback Assistant app to provide feedback to Apple. Launch the app and follow the appropriate steps, selecting the area about which you’re providing feedback and then any specific sub-area. Then describe your issue in a single sentence, before providing a more detailed description, including any specific steps that reproduce the issue. You’ll also be able to attach other files.

You’ll also have to give permission for the Feedback Assistant app to collect diagnostic information from your Mac.

It won’t always be obvious whether something is a bug or just not as easy to use as you might have hoped. Either way, if your feedback is that something appears to work in an illogical way, Apple will want to know that.

If you are having trouble with a third-party app, you can let Apple know by reporting it through the 3rd-party Application Compatibility category in the Feedback Assistant. However, we’d suggest that you also provide feedback to the app’s developer, who will no doubt be grateful.

6.

Will I be able to update from macOS beta to the final version?

Beta users can move to the finished release once its build is newer than – or equivalent to – the beta installed. Read: How to leave the macOS beta.

7.

Can I talk about the beta publicly?

According to Apple and the license agreement all beta testers must agree to, the beta is “Apple confidential information”. By accepting those terms, you agree not to discuss your use of the software with anyone who isn’t also in the Beta Software Program. That means you can’t “blog, post screenshots, tweet, or publicly post information about the public beta software.”

However, you can discuss any information that Apple has publicly disclosed; the company says that information is no longer considered confidential.

8.

How to downgrade from the macOS beta

You can always revert to an earlier version of macOS, though depending on how you back up, it’s not necessarily a painless process.

Start by making sure the data on your drive is backed up, then erase the drive and install the latest public version of macOS. When you first start up your Mac, you can use the Migration Assistant to import your data from the backup. Here’s a more detailed tutorial on downgrading from the macOS beta and we also have a tutorial on downgrading to an older version of the Mac OS.

9.

Is the beta free to download? 


Yes, the macOS beta is free to download for both developers and the general public. Apple offers two distinct tracks for testing pre-release software: the Developer Beta and the Public Beta, both of which are now accessible without a paid subscription.

10.

Can I go back to the stable version?

Yes, you can go back to the stable version of macOS from a beta, but the complexity of the process depends on whether the final version of that software has been released yet.

If you are running macOS 27.2 beta and want to return to the current public release of macOS 27, simply turning off Beta Updates will stop future beta installations, but it will not immediately downgrade the Mac. To return before Apple releases an equivalent public build, you may need to erase the Mac and reinstall macOS, then restore data from a backup made before installing the beta.

11.

Should I install the beta on my main Mac?

Installing a macOS beta on your primary computer is generally not recommended due to the inherent risks of using unfinished software. While beta programs offer early access to new features, they are designed for testing and often contain significant bugs that can disrupt your daily workflow.

12.

Do I need an Apple Developer account to install the beta?

You do not need a paid Apple Developer account to install the macOS beta. While access to developer betas was previously restricted to those paying a $99/£79 annual fee, Apple changed this policy in 2023 to allow anyone with a free developer account to access these builds. Alternatively, you can join the Public Beta program, which is also free and accessible to anyone with a valid Apple ID.

13.

How often are new beta versions released?

New macOS beta versions are typically released every one to two weeks, with the frequency increasing as the final public release date approaches. The beta updates refine features and address bugs identified by testers.

14.

Is the macOS beta safe to install?

The beta is generally safe to test, but it may contain bugs that cause crashes, poor battery life, app compatibility issues, or data loss. Always back up your Mac before installing.

15.

Will my apps work with the macOS beta?

Many apps will work normally, but some third-party software may crash, perform poorly, or not launch at all until developers release updates.

CERN Physicists Find Evidence of One of Higgs Boson’s Rarest Decays

16 September 2026 at 19:29
Event display of a candidate Higgs boson decay to a photon and a lepton pair, from proton-proton collisions recorded with the ATLAS detector in 2022. Image credit: ATLAS Collaboration / CERN.

Physicists from the ATLAS Collaboration at CERN’s Large Hadron Collider (LHC) have found evidence of the Higgs boson decaying into a ‘virtual’ photon and a real photon, which in turn produces a pair of leptons.

The post CERN Physicists Find Evidence of One of Higgs Boson’s Rarest Decays appeared first on Sci.News: Breaking Science News.

A Biblioteca de Alexandria não ardeu numa só noite

16 September 2026 at 19:25

O Project Panama da Anthropic e o treino dos modelos de IA com base em conteúdo de livros, e a ambição de empresas como a OpenAI, estão no centro do artigo de opinião de Helena Borges da Costa.

The post A Biblioteca de Alexandria não ardeu numa só noite appeared first on Tek Notícias.

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