Overview
- Bloomberg’s May 24 Power On report says watchOS 27 will prioritize stability, performance and small refinements rather than major new features.
- The update is expected to include improved heart‑rate tracking, though outlets report Apple has not disclosed technical details about how accuracy or sampling will change.
- Project Mulberry, Apple’s ambitious AI health‑coaching effort, was scaled back and is unlikely to ship with the first iOS 27/watchOS 27 builds according to multiple reports.
- Apple plans to unveil watchOS 27 at WWDC on June 8 with developer betas soon after, a public beta in July and a broad release around September as reported by industry outlets.
- Analysts say the delay reflects leadership and engineering reassignment inside Apple plus device limits for on‑watch AI, and it could affect how quickly Apple competes with focused health players and screenless trackers.