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.