Apple released watchOS 27 on September 14, bringing 12 notable changes to Apple Watch users. The update introduces a dedicated Siri app with private iCloud syncing, a new Siri watch face, and a dynamic app grid that replaces the honeycomb view. A new Tap gesture opens widgets, while Walkie-Talkie has been permanently removed.

Live Rewind, an upcoming feature for Apple Watch Series 12 and Ultra 4, will transcribe the last 15 seconds of speech. Find My now consolidates Find Devices, Find Items, and Find People into one app. Workout Buddy no longer requires an iPhone and now supports Spanish.

Cycle Tracking adds perimenopause notifications for users aged 40 and over. Treadmill distance accuracy has improved via machine learning. The App Switcher returns in watchOS 27.2 with a new gesture.