Apple has released the second developer beta of macOS 27.2, build 26B5091g, arriving one week after the first beta and following the initial launch of macOS 27 earlier this month. This preview continues testing for the upcoming Golden Gate update, with a strong focus on refinements, bug fixes, and ongoing evaluation of known issues.
Expanded Siri AI Language Support
The most significant addition in macOS 27.2 is the expansion of Siri AI to multiple languages beyond English. The first beta introduced support for French, Japanese, Korean, Portuguese, and Spanish, and Beta 2 continues that effort. This marks a major step in Apple’s push to bring advanced on-device intelligence and natural-language capabilities to users worldwide through the Foundation Models framework and App Intents APIs.
Beta 2 Focus on Testing and Stability
Apple has not unveiled any major new user-facing features specifically for Beta 2. Instead, the release emphasizes continued testing and resolution of issues flagged in the first beta. The official release notes list several known problems under investigation, including potential Xcode crashes during code completion ranking, notification failures after a clean installation, and a glitch affecting the Shortcuts ‘Describe a Shortcut’ function. Apple advises developers to review the release notes carefully before installing.
How to Install macOS 27.2 Beta 2
Registered developers can download the beta via System Settings > General > Software Update, then select the macOS developer beta under Beta Updates. Apple strongly recommends backing up your Mac before installing any beta software, as preview builds may contain bugs, compatibility issues, or other problems. The stable release is expected later in October after additional beta iterations.