Apple unveils the Apple Watch Series 12 and Ultra 4, with a new S11 chip, upgraded health tracking, an Audio Intelligence feature, a readiness feature, and more (Zac Hall/9to5Mac)

Apple Watch Series 12 and Ultra 4 launch with the new S11 processor, delivering faster performance and enhanced battery life. Both models add upgraded health sensors—including blood-glucose monitoring—and introduce Audio Intelligence for adaptive sound control and a Readiness feature that suggests optimal activity times.