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Unreleased Apple Watch generation said to be the target for always-on heart-rate tracking, the new health app, and a possible ceramic casing.
iFixit scored the Apple Watch Series 12 and Ultra 4 at 4 out of 10 for repairability, up one point for the base model and flat for the Ultra. Repair budgets should treat every battery job as a screen job, and every Series 12 screen job as a battery job too.
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Apple's Siri Recap explainer says the Apple Watch will not attribute speakers and will drop financial, authentication and government-ID data from its summaries, and it asks the wearer to be mindful of everyone else in the room.
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Apple released beta 3 of iPadOS, watchOS, tvOS and visionOS 27.2 two weeks after beta 2, with new iOS and macOS builds alongside. The Health changes can be tested now, while Apple has not said what tvOS and visionOS add, and those changes may wait on rumored hardware.
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MacRumors' buyer's guide puts the Series 12 and the Ultra 4 on the same S11 chip and the same Health Sensing System, so the $400 between them, and the $500 inside the Series 12 line, buys endurance and case material.
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Rob ter Horst put Apple's rebuilt sensor against a Polar H10 across cycling, running and weightlifting. The three correlations span 0.97 to 1.0. The every-five-seconds resting stream sat outside the test.
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Apple's evidence for calling the Ultra 4's new optical sensor the most accurate in a wearable is a white paper Apple published, drawn from a study where most participants wore competitor watches on the other wrist. DC Rainmaker is testing it outdoors.
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Apple says the Series 12 and Ultra 4 are the most accurate heart-tracking wearables on the market. One reviewer's hour of walk-run intervals, judged against the same chest strap Apple's own accuracy study used, mostly backs it.
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Apple shipped watchOS 27 on September 14, and on watches already in service the Digital Crown double-click now opens the same app grid a single click opens, with no setting to restore the old app switch.
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Apple has stopped selling the Series 11 at the same moment Readiness, Recovery HRV and Audio Intelligence became exclusive to the Series 12, so any mixed deployment now supports two different feature sets.
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Apple's new Audio Intelligence features let an Apple Watch wearer choose on-demand or always-on conversation capture. For everyone else in the room, Apple offers one sentence asking the wearer to be mindful.
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Apple built the wearer a careful consent flow for the Watch's new listening features and built nothing for the person across the table. That is the part it will have to answer for when it moves to glasses.
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Apple will put a 0-to-10 readiness score on the Watch Series 12 and Ultra 4, a metric Oura has kept central since its 2015 Kickstarter. The score depends on battery life, and that is where Oura still leads.
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The redesigned Health app takes a heart rate reading every five seconds off the Apple Watch Series 12 and Ultra 4, turns it into readiness and Health Age scores, and sells the bloodwork that fills the gap for $119.
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Readiness compresses sleep, heart rate and activity into one number from zero to 10, then tells the wearer to recover or go for it. That is a different promise from the alerts users already trust.
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The Series 12 samples heart rate every five seconds and HRV far more often, but the features Apple leads with are judgments built on that data: a readiness score, and a Health Age that grades you against your own age.
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Bloomberg's Mark Gurman reports Apple is testing all-day heart-rate logging and a rebuilt health app showing Whoop- and Oura-style metrics, which puts the interpretation layer subscribers pay for onto hardware they already own.
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