watchOS 27 and iOS 27 Confirmed for September 14: Readiness Score, Siri AI, and Audio Intelligence Coming Monday

Apple confirmed all major OS releases for Monday, September 14. For wearable users, watchOS 27 and iOS 27 bring the most significant software changes this year.

watchOS 27 Highlights for Watch Owners

• Readiness score: A daily recovery metric synthesizing sleep, HRV, and activity data — available on Series 12 and Ultra 4 at launch, with possible expansion to older models
• Siri AI: On-device Siri with Apple Intelligence integration for faster, more contextual responses
• Redesigned Find My app: Improved interface for tracking devices and people
• New Smart Stack capabilities: More intelligent widget suggestions based on time and context

iOS 27 Features for AirPods Users

Audio Intelligence brings smarter audio processing to AirPods, including improved Conversation Awareness and Adaptive Audio. Live Translation now works directly through AirPods 5 and AirPods Pro 3 when paired with an Apple Intelligence-capable iPhone.

Other OS Releases

macOS 27 Golden Gate, iPadOS 27, tvOS 27, and visionOS 27 all arrive the same day. The Siri AI overhaul — first previewed at WWDC in June — is the common thread across all platforms.

What to Do Before Monday

Back up your Apple Watch and iPhone before updating. If you're planning to buy a Series 12 or Ultra 4 (shipping September 18), you'll get watchOS 27 out of the box. Current Apple Watch owners on Series 8 or newer should receive the update. Check our smartwatch guide for compatibility details.