Beta Day continues! Simultaneously with the releases iOS 9.2 beta 2 and OS X El Capitan 10.11.2 beta 2 Apple opened access to the first beta of tvOS 9.1 (build number 13U5061d) for Apple TV developers. tvOS 9.1 is the very first new operating system update for Apple TV. Unlike the beta versions iOS and OS X, the way to install the tvOS beta is not all that obvious. You need to connect Apple TV to your computer via USB-C — USB-A cable and install the update via iTunes.
It is unclear what changes await us in tvOS. We'll update the post as more information becomes available.
If you find any new features or changes in tvOS 9.1 beta, be sure to write about them in the comments.