Apple has seeded the third betas of watchOS 26.6, visionOS 26.6, and tvOS 26.6 to developers for testing.
The software updates are build number 23U5049c for watchOS, 23O5752d for visionOS, and 23L5753c for tvOS. They arrive two weeks after the second beta and alongside the public release iOS 26.5.2 and the third 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.