Available for the fourth-generation Apple TV and Apple TV 4K, registered developers can now download tvOS 11.3 beta 2.
By far the biggest addition in the software is support for Apple’s AirPlay 2 protocol.
The update includes enhancements to the Match Content feature, automatic frame rate switching on the fourth-generation Apple TV, and automatic mode switch on AirPlay.
If you have the second iOS 11.3 beta also installed, the Apple TV will appear in the Home app.
It should officially be able to the public this spring.