Apple’s next watchOS 27 update will sharpen heart‑rate measurement on the Apple Watch, a tweak that could feed into a future AI health coach. Bloomberg’s Mark Gurman says the focus stays on stability and performance, but the company will push finer pulse data to users in the coming months, giving users more precise health insights.

Project Mulberry, the AI coach slated for iOS 27, has been scaled back after internal shifts. Gurman notes it may not launch until later in the cycle, possibly in iOS 27.1 or 27.4. Apple paused the feature to ensure it rivals competing health subscriptions and deliver a competitive user experience across the ecosystem for all.

Consumers will see tighter heart‑rate data, but the real value emerges when the data feeds the coach. Without the AI layer, the Watch remains a fitness tracker; with it, Apple could offer personalized insights and preventive advice, potentially reshaping how users monitor health and motivate daily activity, creating a more engaged user base for everyone.

Apple’s strategy signals a cautious push into health services, balancing feature depth with market readiness. The delayed coach, coupled with improved tracking, suggests the company prioritizes data quality before launching subscription services. Until the next major release, users will rely on raw metrics and third‑party apps while waiting for the next iOS and watchOS updates.