Apple today seeded the sixth beta of an upcoming tvOS 11.3 update to developers for testing purposes



From MacRumors:

Designed for the fourth and fifth-generation Apple TV models, the tvOS 11.3 developer beta can be downloaded onto the Apple TV via a profile that's installed using Xcode and Apple Configurator.

Early tvOS 11.3 updates introduced support for AirPlay 2, allowing the Apple TV to be added to the Home app as part of a HomeKit setup and enabling multiple Apple TVs in separate rooms to play the same song, but that functionality was removed in tvOS 11.3 beta 3.

  Apple Seeds Sixth Beta of tvOS 11.3 to Developers