Apple Watch Ultra 4 Adds Touch ID and 8 Sensors in Thinner Redesign

Q: Will Apple's highly rumored Touch ID finally debut on the Ultra 4, or is it just another scrapped prototype?

Probably not. Touch ID on the Apple Watch Ultra 4 remains a rumor, and the strongest recent reporting points away from it arriving this year. The case for Touch ID comes from scattered leaks suggesting Apple has explored putting fingerprint authentication into the side button or Action Button. If that happened, it would make Apple Pay approval, unlocking the watch, and access to sensitive data more convenient, especially in situations where entering a passcode is awkward. But the more credible reports describe the Ultra 4 as an evolutionary update with no major design overhaul. Bloomberg’s Mark Gurman has said he does not expect major design changes for the new Apple Watch lineup, which makes a new biometric button look less likely. MacRumors has similarly framed the Touch ID talk as increasingly unlikely. That does not prove the feature was fully scrapped, but it does suggest it is not part of the most reliable Ultra 4 picture right now. The practical issue is also significant: building a dependable fingerprint sensor into a small external button on a watch that is meant to handle water, mud, sweat, gloves, and cold weather is a harder engineering problem than on a phone or laptop. What looks far more likely for the Ultra 4 is a thinner titanium body, upgraded health sensors, possible hypertension notifications, an S11-class chip, better power efficiency, and watchOS 27 AI features. So Touch ID should be treated as a speculative possibility, not an expected launch feature.

3 articles · Updated · Geeky Gadgets · Aug 24

Apple’s next Ultra watch is expected to slim down its body while keeping the titanium case and sapphire crystal, a shift aimed at making the rugged model more comfortable for all-day and sleep wear.
Touch ID could be built into a side or action button, while a revamped health system with up to eight sensors is tipped to sharpen heart-rate, blood-oxygen and sleep tracking and add hypertension alerts.
A 3,000-nit always-on display with LTPO3 tech is expected to improve power efficiency, supporting battery life of up to 42 hours in standard use and 72 hours in low-power mode, plus fast charging.
watchOS 27 is set to launch with the device, bringing AI-driven personalization and health insights as Apple appears to favor incremental refinement over a radical Ultra overhaul.