- Apple Watch Series 6 will not receive watchOS 27.
Apple announced watchOS 27 alongside iOS 27 and macOS 27. The new OS supports only the Series 9, Ultra 2 and newer models. Series 6, 7, 8 and the first‑gen Ultra are locked out, meaning they stay on watchOS 26 for the foreseeable future.
The omission matters because the headline features are incremental. AI‑enhanced Siri, a smarter Workout Buddy and a few UI tweaks arrive, but none are exclusive to the older watches. Performance and battery improvements are modest, and security updates will continue for a few years. For users whose watches already cover health tracking and notifications, the cost of a $399+ upgrade outweighs the limited new capabilities.
In practice, the decision mirrors Apple's broader support strategy: older hardware gets security patches but no major features. If your Series 6 still does what you need, there’s little incentive to replace it solely for watchOS 27.