Apple released watchOS 27 beta 5 to developers today, arriving after an unusually long three-week gap since watchOS 27 beta 4 and marking the point in the cycle where feature work gives way to bug fixes and performance tuning. Public beta versions should follow within a day or two. With roughly one month remaining before the expected September launch, Apple’s focus has shifted firmly toward stability and the performance improvements the company has been emphasizing for iOS 27 and its companion releases.
For anyone not tracking the beta cycle closely, watchOS 27 is a substantial update. The headline addition is a dedicated Siri app that consolidates all conversations in one place, lets users start a question on iPhone and continue it on their wrist, and surfaces suggested apps including recently used ones. Users can pin conversations for quick access or start a new one directly from the watch. If you want a closer look at how Siri AI on Apple Watch has evolved through the beta cycle, that’s worth a read.
Fitness gets a real expansion too, workout Buddy, the on-wrist Apple Intelligence feature that debuted in September 2025 with Apple Watch Series 11, is now available in Spanish. It analyzes fitness history against current workouts to deliver personalized encouragement before, during, and after a session. The update also brings improved motion tracking algorithms for more precise treadmill run and walk distance measurement, new data insights, expanded menstrual health support, and better run tracking overall. For a full rundown of what’s available to try right now, the best watchOS 27 features post covers the highlights.
watchOS 27 also refines the Liquid Glass aesthetic introduced earlier in the cycle, with improved readability, more uniform refraction, and enhanced contrast. A new pinch gesture, tapping index finger and thumb together, lets users select Smart Stack widgets for quick access without scrolling.
Compatibility and naming
watchOS 27 requires an iPhone 11 or later, or an iPhone SE (2nd generation or later), running iOS 27. Supported Apple Watch models are:
- Apple Watch SE 3
- Apple Watch Series 9
- Apple Watch Series 10
- Apple Watch Series 11
- Apple Watch Ultra 2
- Apple Watch Ultra 3
If you want to get on the beta yourself, there’s a guide on how to install watchOS 27 public beta on Apple Watch. If you run into issues, the guide to common watchOS 27 beta problems covers the most frequent ones.
