Apple Watch Apple Watch 12 Apple Watch Ultra 4 Apple Event Apple Intelligence watchOS 27 Readiness

Apple Watch Series 12 and Ultra 4 announced: S11, new health sensing, from $399

Thursday

Apple unveiled Watch Series 12 and Ultra 4 with S11, denser heart-rate sensing, Readiness, Audio Intelligence / Siri Recaps; pre-order today, available September 18.

Apple has announced Apple Watch Series 12 and Apple Watch Ultra 4 at Surprise and Shine — turning the Gurman Recaps preview and Readiness app rumor into confirmed products.

9to5Mac and AppleInsider’s Ultra 4 write-up align on the core claims below.

What’s new

New S11 chip with A20 Pro–derived CPU, GPU, and Neural Engine components
Upgraded : Apple says heart rate is sampled every (a large step up from prior cadence) and HRV every five minutes

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Health Sensing System

five seconds

Readiness score drawn from activity, vitals, and sleep — the feature Apple previewed ahead of the event

Audio Intelligence: sound recognition (doorbells/sirens and similar), Live Rewind (~15-second replay/transcription via Digital Crown), and privacy-framed Siri Recaps summaries in the Siri app

Redesigned Health app framing on iPhone with Insights / Longevity-style tabs and a Health Age metric in Apple’s event materials

Familiar industrial design; Series 12 aluminum colors include space gray, black, light gold, and bronze, with ceramic options returning; Ultra 4 stays Black / Natural titanium with a larger battery (Apple cites multi-day life)