A note flagged “Important” atop the Xcode 27.2 release notes:

The iOS SDK and simulator support for iPhone Duo will be available later this month in an upcoming release of Xcode 27.1.

Adapting apps for the Duo is not just a simple “recompile with the new SDK”. It’s different. For just about all apps it’s going to be a significant amount of work, and for some apps it’s going to be a lot of work. But without Xcode 27.1, developers cannot get started. Developers wanted this SDK a week ago. And when day one preorder buyers start using their Duos on October 23, they’re going to wish Apple had shipped this SDK last week too.

Note the reaction from the Deadline reporter.

Steve Wozniak:

I’ve decided it’s time to have a little more fun on X this year! 😄⚡

I get to speak at some amazing events, meet fascinating people, hear great stories, and occasionally find myself in places I never expected to be. So I figured… why not share some of those moments here?

He announced this on X, you will note, not “social media”.

Joe Rossignol, MacRumors:

Apple just seeded the first beta of iOS 27.2 to developers for testing. Yes, you read that correctly: iOS 27.2, not iOS 27.1.

Why no iOS 27.1 beta? The answer likely relates to the iPhone Duo.

This unusual version numbering is entirely about the Duo. The Duo is on its own branch of iOS — heretofore to keep details about its software secret / internal to Apple. When it launches October 23, Apple has already announced it will ship with iOS 27.1. Apple is thus using 27.2 as the version number for the first post-27.0 updates to all of its OSes for devices other than the Duo, to keep those version numbers aligned. The 27.2 releases, I am to understand, are scheduled to ship in October too. I bet they’ll ship after the iPhone Duo launches on October 23. So, putting beta releases aside, we’ll see the versions hit the public in numeric order:

• All OS 27.0 releases: two days ago.
• iOS 27.1: October 23, exclusively on the iPhone Duo.
• All OS 27.2.0 releases: probably in late October, after the 23rd, but with the Duo remaining on its own 27.1 branch.

Then, with a subsequent 27.2.x update, the Duo will join the other devices and version numbers across all devices on all platforms will converge, in November or early December. I believe that’s the plan. Maybe Duo convergence will wait for 27.3, but I think it’ll be a 27.2.x update.

Something similar happened back in 2010 with the original iPad, which launched in April 2010 running what was then still called iPhone OS, version 3.2. iPhone OS 3.2 was exclusive to the iPad — no iPhone or iPod Touch ever ran it. (Those devices remained on v3.1 after the iPad launched.) Apple renamed the OS to iOS at WWDC in June that year, but iOS 4.0 and 4.1 remained exclusive to iPhones and iPod Touches. Convergence with the iPad didn’t happen until iOS 4.2 in late November.

This time it should only take a month or so to converge for the Duo, not seven or eight months like it did for the iPad in 2010. But iOS 27.1 is exclusively for the Duo in a very similar way that 3.2 was exclusive to the iPad.

In my long take yesterday on Apple’s event last week, I wrote that when you pay $20 extra to get the $150 AirPods 5 With Wireless Charging Case, that the case is compatible for inductive charging with “MagSafe, Qi, or Apple Watch pucks”. But the compatibility section of Apple’s tech specs page for AirPods 5 doesn’t list MagSafe:

Works with USB‑C connector, Apple Watch charger, or Qi‑certified chargers

That’s because for Apple, true MagSafe compatibility means magnetic attachment. The AirPods 5 case doesn’t have MagSafe magnets (the case is seemingly too small), only magnets for the Apple Watch puck. AirPods Pro cases have magnets to attach to both pucks. So when you charge AirPods Pro with MagSafe, they snap to the puck. I can snap my AirPods Pro 3 case onto a nearly vertical MagSafe charger, like the Nomad Stand One I keep next to my keyboard. (Great product — you should get one. I have two; the other is on my nightstand.) I can’t charge the AirPods 5 case on that stand because it just falls off.

But if I lay the AirPods 5 case on a horizontal MagSafe puck, it charges just fine. That’s because MagSafe pucks are themselves Qi-compatible. I see why Apple is a stickler for this — the “mag” in MagSafe carries an obvious meaning — but by not mentioning MagSafe at all it’s reasonable to draw the conclusion that the AirPods 5 Wireless Charging Case doesn’t work with MagSafe at all.