Apple just seeded the third beta of tvOS 10.2.2 to developers. This update comes over two weeks after the last seed of tvOS 10.2.2 to developers. We’re currently unsure what’s new in this version. It likely brings bug fixes and improvements.
To get this version developers will need to connect their Apple TV to a computer and manually install the IPSW via iTunes. You can download the IPSW from the developer center.