Apple's upcoming iPhone launch event will introduce new Apple Watch models, including Apple Watch Ultra 4 and Apple Watch Series 12. Both devices are expected to feature upgraded chips and enhanced health capabilities, with Mark Gurman reporting a long-awaited performance boost. Current models use an S10 chip, but minimal improvements have occurred since the S9 in 2023.

The new S11 chip could complement watchOS 27's Siri AI integration. Digitimes suggests a major redesign for Apple Watch Ultra 4, though Gurman indicates significant design changes may arrive next year. A ceramic case option will return for this year's models.

Reports indicate Apple Watch Ultra 4 will include a substantial upgrade to sensing functions, potentially doubling sensor count, with some sensors possibly related to enhanced hypertension notifications. FDA is reviewing a new high blood pressure notification feature. Bloomberg also reports a new always-on heart rate sensor in the latest Watch models.

The event awaits Wednesday for official details.