Overview
- The update carries firmware version L310XXU1BYI4 and includes the September 2025 security patch.
- Distribution starts with beta participants in South Korea, with wider availability expected to follow.
- Download size is roughly 160MB for beta users, while full public OTA packages are likely around 2GB.
- New health and fitness tools include Antioxidant Index, Bedtime Guidance, Running Coach, and Vascular Load.
- UI changes add the Now Bar for ongoing activities, multi-widget Tiles, expanded double pinch gestures, a new charging animation, improved notifications, a personalized apps screen, better watch face recommendations, and new faces.