Apple released tvOS beta 2 to developers for testing. The build number is 13T5365h.
This is a pre-release version of tvOS for the new Apple TV only. Apple TV (3rd generation) and earlier are not supported.
tvOS SDK 9.0 beta provides support for developing tvOS apps. It is packaged with a complete set of Xcode tools, compilers, and frameworks for creating apps for tvOS. These tools include the Xcode IDE and the Instruments analysis tool, among many others. This version of tvOS is intended for installation only on devices registered with the Apple Developer Program. Attempting to install this version of tvOS in an unauthorized manner could put your device in an unusable state.
Developers can download the second beta of tvOS from the link below.