Apple Watch Series 9 Mistakenly Left Off watchOS 27 Compatibility Listvia MacRumors: Mac News and Rumors - All Stories (author: Hartley Charlton)

Apple today confirmed that the Apple Watch Series 9 is compatible with watchOS 27, after the device was mistakenly omitted from the software's official compatibility page.Apple updated its website immediately following its WWDC 2026 keynote, and the watchOS…