Multiple supply-chain and code leaks point to a major overhaul of Apple’s smartwatch line in 2026. The high-end model—described in several reports as the Apple Watch Series 12 or a next-generation Ultra—would feature a redesigned underside with a glass-covered ring containing eight health sensors. The new layout is expected to boost measurement accuracy and enable additional biometrics, such as blood-pressure warnings that Apple has been testing internally. By contrast, the Apple Watch models due this September—including Series 11, Ultra 3 and a refreshed SE—are shaping up as incremental updates. Leaked firmware indicates the forthcoming S11 system-in-package retains the T8310 core architecture used since the Series 9, suggesting limited performance gains. These 2025 watches are nonetheless expected to support the company’s on-device "Apple Intelligence" features and offer modest efficiency improvements. The two-step roadmap signals Apple’s intent to hold steady in 2025 while preparing a more ambitious hardware leap the following year. Analysts say the eight-sensor array could allow Apple to expand its lead in wrist-based health tracking and better differentiate premium models in a maturing smartwatch market.