Apple has released the second tvOS 11.3 public beta for Apple TV (fourth gen) and Apple TV 4K



From 9to5Mac:

Here’s what’s new in tvOS 11.3 beta so far:

Apple TV shows up in Home app with tvOS 11.3, doesn’t work as hub for automation and remote access without tvOS 11.3 on iOS 11.3, AirPlay 2 also working
Apple TV (fourth gen) now supports frame rate matching, previously required Apple TV 4K
Match Content has been improved per release notes
New Privacy explainer at launch
Apple TV location now pulls from HomeKit rooms
See how your data is managed section

  tvOS 11.3 Public Beta 2 for Apple TV