Apple Launches Developer Betas for watchOS 26.4, tvOS 26.4, and visionOS 26.4

Apple has released the fourth beta versions of watchOS 26.4, tvOS 26.4, and visionOS 26.4 for developers to test. These updates follow the third beta releases from a week ago. Developers can access these betas through the Settings app on their devices, but a free developer account is required.

New Features in watchOS 26.4

One of the notable additions in watchOS 26.4 is a new Average Bedtime metric within the sleep tracking features. This metric syncs with the Health app, allowing users to monitor how their bedtime affects overall sleep quality more effectively.

tvOS 26.4 Updates

The tvOS 26.4 update includes the removal of the iTunes Movies and iTunes TV Shows apps on the Apple TV. These apps have been inactive for some time and have directed users to the Apple TV app for content purchases. Additionally, tvOS 26.4 introduces a Continuous Audio Connection option for HDMI output.

visionOS 26.4 Enhancements

visionOS 26.4 introduces support for foveated streaming in apps and games. This technology streams video to the precise area where the user is looking, compressing peripheral areas, which enhances visual quality and reduces latency.

元記事: https://www.macrumors.com/2026/03/09/apple-seeds-watchos-26-4-beta-4/