Apple Watch Series 12 and Ultra 4 Launch With Longevity-Focused Health Features

Apple announced Series 12 and Ultra 4 with health-age, readiness, faster HRV sampling, movement assessments, and Apple Intelligence coaching features, with availability beginning September 18, 2026. The launch is important for buying guides, but Apple’s health-study and wellness claims lack independent validation; ceramic versus titanium mainly changes price, weight, durability, and finish.