Apple has seeded the fourth betas of watchOS 26.6, visionOS 26.6, and tvOS 26.6 to developers for testing.
The software updates are build number 23U5054b for watchOS, 23O5757c for visionOS, and 23L5758b for tvOS. They arrive a week after the third beta and alongside the fourth beta of iOS 26.6.
Registered developers can download the new software directly through the Software Update section in Settings on their respective devices. Installing the watchOS update requires using the companion Watch app on a paired iPhone.
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