Apple has released the second developer beta of macOS 27 Golden Gate following WWDC26, introducing key updates to the upcoming operating system. The new build, version 26A5368g, arrives two weeks after the initial developer release and includes refinements to the controversial Liquid Glass interface. Users can now adjust transparency levels for UI elements via a new slider, and rounded corners have been standardized across system windows.

The beta features Siri AI with a dedicated companion app that leverages a new indexing system to improve answer accuracy. This implementation relies on the third-generation Apple Foundation Models, marking a significant step in Apple's on-device AI capabilities. These changes build on feedback from the first beta, which faced criticism over inconsistent visual design.

Developers can install the beta through System Settings, though Apple recommends backing up Macs before updating. The release signals Apple's push toward tighter integration of AI features in its next generation of software, with Liquid Glass and Siri representing major user-facing changes. Further details about the Foundation Models are available through Apple's developer resources.