On Thursday, much later than Apple's normal 10:00 a.m. Pacific time rollout, Apple made available its fifth beta of tvOS 10.2.2.
The latest tvOS beta update can be downloaded through Apple's developer portal, or through the software update feature on properly configured and registered devices. Nothing of note was identified in previous betas of the tvOS update, suggesting that the update is centered around security and bug fixes.
The sixth betas of iOS 10.3.3 and macOS Sierra 10.12.6 were released on Wednesday.
Also ongoing are tests on the second developer beta releases of iOS 11, macOS 10.13 High Sierra, watchOS 4 and tvOS 11.