(Image credit: Dan Bracaglia/Tom's Guide)

The Apple Watch Ultra 3 is easily one of the best smartwatch models in 2026 and Apple’s best smartwatch for battery life, but a new Ultra model could be here before we know it.I’ve been tracking all Apple Watch Ultra 4 rumors ever since the arrival of the Ultra 3 last fall, and there are quite a few juicy ones to chew on, including hints of a redesign, new health tech, and even better battery performance.Here’s everything we think we know (and think we know) about the Apple Watch Ultra 4.Apple Watch Ultra 4: Rumors in briefPrice and launch date: The Apple Watch Ultra 4 is expected to arrive on Wednesday, September 9th, with preorders available later in the week and units shipping the following week; it may also be the first Ultra model that costs more than $799Design: A slimmer case design is possible; a fingerprint reader for Touch ID, located under the display or on the digital crown/action button, is also rumoredHolistic upgrades: There's a small chance the Ultra 4 will support on-wrist blood pressure readings, but more likely, we'll see an expansion of Hypertension Alerts (possibly blood pressure trend reports); Apple may finally bring all your health, fitness, and medical data under one app; the Health app is tipped for a redesign to better surface long-term health trendsAI upgrades: The Ultra 4 is expected to ship with watchOS 27 installed, which supports Siri AI; a personalized AI-powered wellness concierge feature is rumoredBattery life: An updated processor could make the Ultra 4 more power-efficient than its predecessor; little else is known about battery lifeApple Watch Ultra 4: Possible price and launch date