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macOS 27 Golden Gate developer beta 6 now available to developers

Apple has released macOS 27 Golden Gate developer beta 6 to developers, one week after beta 5, with the build number 26A5416b. The update follows a three-week gap between betas 4 and 5 and comes ahead of the final release. macOS 27 introduces a dedicated Siri app, unified corner radii, AI-powered features in Shortcuts and Safari, a pull-to-refresh gesture, and a revamped iPhone Mirroring app.

read2 min views5 publishedAug 17, 2026
macOS 27 Golden Gate developer beta 6 now available to developers
Image: 9To5Mac (auto-discovered)

After a rare three-week hiatus between macOS developer betas 4 and 5, Apple has now rolled out beta 6 just a week after last Monday’s build. Here’s what to expect.

Apple rolls out macOS 27 developer beta 6 #

With the final stretch before its official release fast approaching, Apple is now rolling out macOS 27 Golden Gate beta 6 to all developers.

Last week, beta 5 introduced new app icons for several apps, including Siri, Chess, and Safari, but didn’t introduce any other relevant features (or bugs, for that matter).

macOS 27 Golden Gate introduces a dedicated Siri app, unifies corner radii across windows and apps, and adds AI-powered features to Shortcuts and Safari, allowing users to create extensions and automations with simple prompts.

The system also introduces a new pull-to-refresh gesture in Safari, which many see as an early sign that Apple is making macOS more touch-friendly ahead of the rumored touchscreen MacBook Pros.

macOS 27 Golden Gate also revamps the iPhone Mirroring app, allowing users to resize its window to different aspect ratios, a change similarly seen as foreshadowing the rumored foldable iPhone Ultra, which is expected to be announced next month.

The release build for macOS 27 Golden Gate is 26A5416b.

Installing the macOS 27 Golden Gate beta #

Here’s [how to install](https://developer.apple.com/support/install-beta/#macos-beta) the macOS 27 Golden Gate developer beta 5:

[Back up](https://support.apple.com/en-gb/102307)your Mac- Open System Settings
  • Go to General ⇾ Software Update
  • Click the ‘i’ icon next to Beta Updates
  • From the dropdown menu in the top-right, select the macOS Developer Golden Gate Beta
  • Hit ‘Done’

Did you spot anything new in today’s macOS 27 Golden Gate beta? Let us know in the comments.

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