Apple has dramatically reduced the number of Apple Watch models eligible for its latest smartwatch operating system. Announced during WWDC 2026, watchOS 27 will support only six Apple Watch models, marking one of the largest compatibility cuts in the platform’s history.
The decision reflects Apple’s ongoing focus on newer hardware and advanced software capabilities. However, it also means many Apple Watch owners will miss out on the latest features arriving later this year.
Which Apple Watch Models Make the Cut?
According to Apple’s compatibility information, watchOS 27 will run on the Apple Watch SE 3, Apple Watch Series 9, Series 10, Series 11, Apple Watch Ultra 2, and Apple Watch Ultra 3.
In addition, users will need an iPhone 11 or newer, or a second-generation iPhone SE or later, running iOS 27 to use the update. This requirement further aligns Apple’s wearable ecosystem with its latest smartphone software.
Several Popular Models Lose Support
The biggest surprise involves the number of devices left behind. Apple Watch SE 2, Series 6, Series 7, Series 8, and the original Apple Watch Ultra will no longer qualify for the update. As a result, more than half of the watches that supported watchOS 26 are excluded from watchOS 27.
Although Apple has not provided a detailed explanation, the company typically removes support when older hardware cannot efficiently handle new software demands. Therefore, performance limitations and feature requirements likely influenced the decision.
New Features Drive Higher Hardware Demands
Apple continues to introduce more sophisticated capabilities across its ecosystem. watchOS 27 includes an upgraded Siri experience powered by artificial intelligence, along with expanded health and fitness features. These additions require greater processing power and system resources than older models can reliably provide.
Consequently, Apple appears focused on delivering a more advanced smartwatch experience rather than maintaining broad compatibility across aging devices.
A New Chapter for Apple Watch
The watchOS 27 rollout highlights a broader trend across Apple’s product lineup. As artificial intelligence, health tracking, and machine learning become increasingly important, the company is prioritizing hardware capable of supporting those technologies.
For users with newer devices, the update promises access to Apple’s latest innovations. Meanwhile, owners of older Apple Watches may soon face a familiar question: whether it is time to upgrade to keep pace with Apple’s evolving software ecosystem.
