Apple updated its website immediately following its WWDC 2026 keynote, and the watchOS 27 page listed a shorter compatibility list than many users expected: the Apple Watch SE 3, Series 10, Series 11, Ultra 2, and Ultra 3. That would have meant watchOS 27 dropped support for the Apple Watch Series 9, despite both the Series 9 and Ultra 2 containing the same S9 chip.
Shortly after Apple released watchOS 27 developer beta 1, Apple Watch Series 9 owners began reporting that they were able to download, install, and run the beta on their devices. Apple has since confirmed to MacRumors that the Series 9 omission was an error, and that the device is indeed supported. Apple’s website still does not list the Series 9 among compatible models, but that is likely to be corrected soon.
watchOS 27 still drops support for the Apple Watch Series 6, Series 7, and Series 8, along with the original Ultra and SE 2, a significant cut that makes it the largest single-year drop in Apple Watch software support to date. The update introduces a new Siri AI app, new workout data insights, Spanish support for Workout Buddy, and more.
This article, “Apple Watch Series 9 Mistakenly Left Off watchOS 27 Compatibility List” first appeared on MacRumors.com
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