Apple Seeds First Betas of watchOS 26.4, tvOS 26.4, and visionOS 26.4 to Developers [Download]

Apple has seeded the first developer betas of watchOS 26.4, visionOS 26.4, and tvOS 26.4. The updates arrive alongside the iOS 26.4 beta, kicking off the next round of platform updates across Apple's ecosystem.



The build numbers for today's releases are:


watchOS 26.4: 23T5209m
visionOS 26.4: 23O5209m
tvOS 26.4: 23L5208m

These betas follow the public release of version 26.3 earlier this month, which focused primarily on stability improvements and enabled Notification Forwarding for wearables in the European Union.

While iOS 26.4 is drawing attention for its potential AI changes and Health app updates, it remains unclear which new features, if any, will extend to the watch, headset, and Apple TV. However, code discovered in internal builds last year hinted at new spatial features for the Vision Pro targeted for a spring 2026 release, including an "Enhanced Room Spatializer" and new sticker creation tools.

Developers can download the new software from the Apple Developer Center or via the Software Update section in Settings on their respective devices. We're installing the updates now and will report back with any notable changes.


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