Designed for the fourth and fifth-generation Apple TV, the new tvOS 12 developer beta can be downloaded onto the Apple TV via a profile that's installed using Xcode.
tvOS 12 brings support for Dolby Atmos, a feature that Apple TV users have been wanting since the Apple TV 4K first launched. Starting this fall, iTunes will be home to the largest collection of Dolby Atmos-supported movies, and all purchased iTunes movies will be upgraded for free.
There are new aerial screensavers on Apple TV that were captured from the International Space Station.
Starting later this year, Apple is introducing a new Zero Sign-On feature for Charter Spectrum users that will let them watch live channels and on-demand programs when connected to their Charter Spectrum broadband with no need to sign in.
Charter Spectrum users are also going to be able to place their traditional cable boxes with the Apple TV through an upcoming Spectrum TV app. These features will come to other providers in the future.
Other tvOS 12 features include autofill passwords from the iPhone to sign into Apple TV apps more quickly, and support for Home Control systems like Crestron and Savant, which will be able to be used to control the Apple TV. Apple also plans to make the Apple TV Remote a default option in Control Center on iOS devices.
The tvOS 12 update is limited to developers right now, but Apple will provide a public beta of the software to public beta testers later this summer. tvOS 12 will see a fall launch alongside iOS 12, macOS 10.14, and watchOS 5.