Login
macOS Golden Gate Beta 3 – Everything You Need to Know!
macOS Golden Gate Beta 27.0 Beta 3 (26A5378j) is now Available!
UPDATED: 07/06/26
Apple has released the third developer beta of macOS Golden Gate with more refinements to the new interface and AI features.
Beta 3 further improves the Liquid Glass design with better readability, updated window styling, and a new transparency slider that lets you control the amount of the glass effect.
Apple is also expanding Siri AI on the Mac. It now lives in Spotlight, has its own app for conversations, can answer questions about your files and what’s on your screen, and can help with writing.
This beta also includes additional AI features across apps like Photos, Safari, Passwords, and Image Playground as Apple continues preparing macOS Golden Gate for its public beta next month.
Table of Contents
- OCLP Users Warning
- Should You Install macOS Golden Gate?
- Full Apple Update Release List
- What’s New in macOS Golden Gate?
- Apple macOS Golden Gate Links
- macOS Golden Gate Beta Release History
- macOS Golden Gate Full Installer.app
- Apple Silicon macOS Golden Gate IPSW Restore File
- macOS Golden Gate Update Sizes
- Apple Silicon Firmware & iBoot Versions
- Safari Version
- Security Content of macOS Golden Gate
- macOS Golden Gate Release Notes
- Final Notes
NOTE: I hate website ads, but this one small Google ad below helps me with the cost of running Mr. Macintosh.com. Thank you!
1. OCLP Users Warning
OpenCore Legacy Patcher is not compatible with macOS Golden Gate or macOS Tahoe. Make sure you go into System Settings > Software Update and turn off Download Updates and Install macOS Updates.
If you use OCLP on an unsupported Mac, wait for official OpenCore Legacy Patcher 3.0.0 testing and compatibility information before attempting to install.
2. Should You Install macOS Golden Gate Beta?
Most users should not install macOS Golden Gate Beta on their main Mac. This is early beta software, which means apps may crash, battery life may be reduced, accessories may not work correctly, and some features may be unfinished.
Install it only if you have a test Mac, a full backup, and a reason to test the new release early. I recommend two types of backups: Time Machine & A direct copy of your important files and apps
This might seem like a lot, but TRUST ME, it will be worth it if something goes wrong!
MacAdmins, developers, and advanced users can begin testing app compatibility, MDM enrollment, security tools, VPN clients, printers, FileVault workflows, software update behavior, and deployment processes.
3. Full Apple Update Release List
Beta 3
- macOS Golden Gate 27.0 (26A5378j)
- iOS 27.0 ()
- iPadOS 27.0 ()
- tvOS 27.0 ()
- homePodOS 27.0 ()
- visionOS 27.0 ()
- watchOS 27.0 ()
Safari
- Safari 27.0
Developer Tools
- Xcode 27 beta
- Command Line Tools for Xcode 27 beta
4. What’s New in macOS Golden Gate Beta 3?
Apple has released the 3rd developer beta of macOS Golden Gate 27.
New Features & Changes
Liquid Glass Design Updates
macOS Golden Gate brings a more polished Liquid Glass design with better readability, improved contrast, more consistent toolbars, edge-to-edge sidebars, updated window shapes, and refreshed menu bar icons. Apple has also added a new slider that lets you adjust the Liquid Glass look from very clear to fully tinted.
Performance Improvements
Apple says the system should feel faster overall, with quicker AirDrop transfers, faster network file browsing, faster Safari start page loading, improved Mail search ranking, and better Spotlight search suggestions.
Siri AI on Mac
The biggest new feature is Siri AI on Mac. Siri can now answer more natural questions, understand personal context, take actions inside apps, work from Spotlight, and live inside a new dedicated Siri app for longer conversations.
Visual Intelligence
Visual Intelligence is also coming to the Mac, letting you ask questions about what’s on your screen and get help based on the content you’re looking at.
Writing Tools & Apple Intelligence
Golden Gate expands Writing Tools with Siri, adds better AI photo editing, improves Image Playground, and lets you create Shortcuts from plain-language descriptions.
Safari & Passwords
Safari gets smarter tab grouping, page-change alerts, and faster start page loading. Apple is also adding one-click password fixes to help update weak or reused passwords more easily.
Family, Safety & Accessibility
Golden Gate includes stronger child safety controls, improved Screen Time features, and new accessibility improvements across the system.
Other Notable Changes
Other smaller changes include ultrawide display upgrades, better iCloud Shared Albums, Call Context, enhanced Flyover in Maps, swipe-to-refresh in more apps, and a refreshed video podcasts experience.
5. Apple macOS Golden Gate Links
Official links will be added as Apple publishes more macOS Golden Gate documentation.
- Apple Developer Site — macOS 27
- macOS Beta Program Information
- Apple Security Updates Page
- Apple macOS Golden Gate Features Page
6. macOS Golden Gate Beta Release History
macOS Golden Gate 27.0 Beta 2
- Version: macOS Golden Gate 27.0 Beta 2
- Build: 26A5368g
- Release Date: 06/22/26
- Release Type: Developer Beta
macOS Golden Gate 27.0 Beta 1
- Version: macOS Golden Gate 27.0 Beta 1
- Build: 26A5353q
- Release Date: 06/09/26
- Release Type: Developer Beta
7. macOS Golden Gate Full Installer.app
The full installer is useful if you want to create a USB installer, install macOS Golden Gate on another Mac, or archive the installer for testing.
Use this link to download the latest version of macOS Golden Gate Full installer AKA InstallAssistant.pkg
https://mrmacintosh.com/macos-golden-gate-full-installer-database-download-directly-from-apple/
8. Apple Silicon macOS Golden Gate IPSW Restore File
An IPSW restore file is mainly used to restore or revive Apple Silicon Macs with Apple Configurator, Finder, or another Mac.
Most users do not need the IPSW file for normal macOS updates. IPSW files are intended for restores, revives, troubleshooting, clean installs, and testing workflows.
Use this link to download the full Mac IPSW restore file directly from Apple:
https://mrmacintosh.com/apple-silicon-m1-full-macos-restore-ipsw-firmware-files-database/
9. macOS Golden Gate Update Sizes
Update sizes will vary depending on your Mac model and the version of macOS currently installed.
Update Size Information
- Full Installer:
- IPSW Restore File:
- Delta Update: TBD
- Combo Update: TBD
More update size details will be added after additional testing.
10. Apple Silicon Firmware & iBoot Versions
The Apple Silicon firmware and iBoot versions included with macOS Golden Gate Beta 1 are listed below.
- Apple Silicon Firmware Version: 20356.0.0.0.15
- Apple Silicon iBoot Version: 20356.0.0.0.15
11. Safari Version
macOS Golden Gate Beta 1 includes Safari 27.0.
- Safari Version Included: Safari 27.0
- Safari Security Content: Apple does not release security notes for beta software
- WebKit Security Content: Apple does not release security notes for beta software
12. Security Content of macOS Golden Gate Beta 1
Apple does not publish full CVE security content for macOS beta releases.
This section will be updated if Apple publishes security details for macOS Golden Gate 27.
- Security Fixes: Not disclosed for beta releases
- Safari Security Fixes: Not disclosed for beta releases
- WebKit Security Fixes: Not disclosed for beta releases
13. macOS Golden Gate Beta 2 Release Notes
This is the official link to Apple’s developer notes for macOS Golden Gate 27:
https://developer.apple.com/documentation/macos-release-notes/macos-27-release-notes
14. Final Notes
If you install macOS Golden Gate Beta 2, make sure you have a full backup before proceeding. Beta software can cause app compatibility issues, performance problems, and data loss. Do not install this beta on your main Mac unless you are comfortable troubleshooting and restoring macOS.
The post macOS Golden Gate Beta 3 – Everything You Need to Know! appeared first on Mr. Macintosh.
