Mac Rumors reports that Apple today seeded the fourth beta of an upcoming tvOS 10.2 update to developers for testing purposes

Designed for the fourth-generation Apple TV, the fourth tvOS 10.2 beta can be obtained by connecting the Apple TV to a computer with a USB-C to USB-A cable, downloading and installing the software from a registered developer account via iTunes or Apple Configurator. Once a profile is installed, subsequent betas can be downloaded over the air.

Given the tricky installation requirements, tvOS betas are limited to developers and will not be provided to the public.

  Apple Seeds Fourth Beta of tvOS 10.2 to Developers