Summary
The Apple Watch Series 12, unveiled at Apple's September 2026 event, features significant internal changes despite a similar exterior, including a redesigned health-sensing system and a new S11 chip. These upgrades enable new features like an upcoming Readiness Score, enhanced heart rate variability tracking, and AI capabilities such as Sound Recognition and faster Shazam, with more advanced AI features like Live Rewind and Siri Recap expected later.