https://arstechnica.com/gadgets/2022/09/rugged-apple-watch-pro-headlines-apples-new-wearable-lineup/ > CUPERTINO, Calif.—Today at its annual September iPhone event, Apple revealed an overhaul of its Apple Watch lineup, including three watches for three types of users. > First up is the Apple Watch Series 8, the direct successor to Apple's previous flagship wearable. Notably new is a temperature sensor designed to improve women's health tracking. Sensors on both the underside of the watch and just underneath the display can track changes as small as 0.1° Celsius, Apple claims. Users can be notified of cycle deviations and other aberrations tracked by temperature, heart rate, and cycle logging.