Apple Seeds Fourth watchOS 26, tvOS 26, and visionOS 26 Developer Betas

Apple has released the fourth betas of watchOS 26, tvOS 26, and visionOS 26 for developers, two weeks following the third beta release. These software updates can be accessed through the settings app on each respective device, requiring a developer account. Both watchOS 26 and tvOS 26 feature Liquid Glass design changes influenced by visionOS, similar to iOS 26 and macOS 26. WatchOS 26 introduces an AI Workout Buddy, enhanced Smart Stack suggestions, a new Notes app, and Live Translation support, while tvOS 26 adds karaoke support with iPhone microphones, AirPlay speaker improvements, new screen savers, and quicker app logins through Apple Account syncing.