Two weeks after releasing macOS 27 Golden Gate beta 2, Apple is now rolling out beta 3 for developers. Here are the details.
macOS 27 Golden Gate beta 3 rolling out now to developers
Two weeks ago, Apple released macOS 27 Golden Gate developer beta 2. Although it included barely any notable user-facing tweaks or features, the update introduced under-the-hood changes that made it significantly less reliable than beta 1.
With today’s release, likely the first beta built after WWDC, there is a chance the system will include changes based on early user feedback.
macOS 27 Golden Gate brings several improvements to Liquid Glass, including a slider that lets users precisely adjust how transparent or opaque UI elements appear. It also standardizes rounded corners across system windows, apps, and programs, addressing a frequent complaint in macOS 26.

Additionally, macOS 27 Golden Gate features the new Siri AI and its companion app, which leverages a new indexing system under the hood to more precisely include relevant information as the basis for Siri to generate answers. Siri AI and macOS 27 Golden Gate as a whole rely on the third-generation Apple Foundation Models, and you can read more about them here.
The build version for macOS 27 Golden Gate beta 3 is 26A5378j. We are digging through the new beta and will report back with what we find.
macOS 27 Golden Gate beta 3 now available
Here’s how to install the macOS 27 Golden Gate developer beta 3:
- Back up 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 macOS 27 Golden Gate beta 3? Let us know in the comments.
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