Apple macOS 27 software developments

The rollout of macOS 27 has introduced new integrated features for Mac users. Initial reports highlighted the discovery of a hidden, local large language model accessible via the Terminal app, known as Apple Foundation Models CLI. This tool allows for AI interactions directly on the device without an internet connection or external service transmission.

Subsequent updates through the macOS 27.3 developer beta introduced Live Activities to the Mac menu bar. This feature provides real-time updates for applications such as Apple Music, Clock, Voice Memos, and screen recording, bringing functionality previously limited to hardware with a Dynamic Island to a broader range of Mac models. By placing these updates in the menu bar, users can monitor ongoing tasks without switching windows.

The update is expected to reach a stable release in December 2026. Apple is also enabling third-party developers to implement Live Activities within their own applications, which may eventually include tools for tracking downloads, timers, or delivery services.