Rumored — not yet announced. Apple has not confirmed Apple Watch Series 12 or any specification on this page. Everything below is drawn from leaker and analyst reporting, cited to its original source in our news coverage. Last updated 2026-09-10; this page will be rebuilt with confirmed specs once Apple officially announces the device.
Apple Watch Series 12
Expected to announce September 9, 2026 (confirmed) · Expected release September 18, 2026 (confirmed)
What's rumored so far
Apple Watch Series 12 brings the first genuine chip upgrade to the lineup in three generations — the new S11, following a long stretch where the Series 10, 11, and Ultra 2/3 all reused the same S10/S9-era silicon. The S11 powers a redesigned biometric sensor array with an expanded ECG electrode area and background heart-rate sampling every 5 seconds, versus far less frequent sampling before. Design stays familiar: no Touch ID, no major case redesign, but a ceramic case option returns for the first time in six years. No score yet.
Chip name, sensor details, pricing, and battery figures here are Apple-confirmed via its own announcement and directly corroborated across multiple outlets' post-keynote coverage (BGR, AndroidHeadlines, Newsy Today) — a step up in certainty from this page's rumor-era version, which had genuine uncertainty over even the chip's name.
Chip
Apple S11Battery
24hr typical, 10hr outdoor workout (+25% vs Series 11)Case options
Aluminum, titanium, ceramic (returning)Sizes
42mm / 46mmVariants
Wi-Fi and cellularPredicted price — not official
£399 (confirmed, unchanged from Series 11)$399 (confirmed, unchanged from Series 11)€429 (confirmed, unchanged from Series 11)
Rumored specifications
Every row below is unconfirmed. Where sources disagree, we've noted the disagreement in the note rather than presenting one figure as settled.
Performance
Chipset
Apple S11The first real Apple Watch chip upgrade since the S9 launched in 2023 — Series 10, Series 11, Ultra 2, and Ultra 3 all reused that same silicon
Sensors
Redesigned biometric array — expanded ECG electrode area, ring-shaped photodiode layout, larger green LEDEnables background heart-rate sampling every 5 seconds and HRV sampling every 5 minutes, a large jump in sampling frequency over previous models, per Apple
Battery
Typical use
24 hours, unchanged from Series 11
Outdoor workout
10 hours — 25% more than Series 11, per Apple
Design
Case options
Aluminum, titanium, and ceramic (white or dark gray)Ceramic returns after six years away — last offered on the Series 3 Edition
Sizes
42mm and 46mm
Touch ID / redesign
Neither included — Apple kept the existing design language
Connectivity
Variants
GPS (Wi-Fi/Bluetooth) and GPS+Cellular
Where these rumors come from
This page summarizes our own reporting below — each article goes into the full sourcing, outlet-by-outlet, for that specific rumor.