Apple today seeded yet another build of its tvOS 10.2.1 beta to developers. The build number for beta 5 is 14W585, and nothing was released in regards to iOS, macOS, or watchOS.
As the version number indicates, there won"t be any new front-facing features in this update; instead, it focuses on "bug fixes, and security improvements in the OS." The release notes specifically say that there are no known issues, just as they have for previous builds.
The company seems to be gearing up for a public release of tvOS 10.2.1, along with iOS 10.3.2, macOS 10.12.5 Sierra, and watchOS 3.2.2. The beta releases are becoming more frequent, and they"re not being released at the same time, like they usually are. The last Apple beta prior to this was macOS on the 1st, and before that was iOS on April 27.