Apple Watch Series 12, Ultra 4 Leak Shows 128GB Storage and New Readiness App
Updated
Updated · MacRumors · Sep 7
Apple Watch Series 12, Ultra 4 Leak Shows 128GB Storage and New Readiness App
3 articles · Updated · MacRumors · Sep 7
Summary
watchOS 27 and iOS 27 beta code points to four additions for Apple’s next watches: a standalone Readiness app, richer strength-workout tracking, a new optical-sensing system and 128GB storage.
The code places Readiness next to Workout in the default Home Screen and expands health data fields to log sets, reps, weight, equipment, body side and duration.
A sensor family labeled “Sunstone4p0” includes lower-noise coefficients and wrist- and orientation-based channel selection, suggesting improved heart readings when pulse signals are weak.
A NAND profile tied to the T8320 chip indicates Series 12 and Ultra 4 could double storage from 64GB to 128GB ahead of Apple’s expected unveiling later this week.
The leak aligns with Mark Gurman’s earlier report that Series 12 and Ultra 4 would add new health and fitness features.