Apple today seeded a new build of tvOS 10.0.1 to developers, bringing the build number for beta 4 to 14U71. Today's update comes ten days after beta 3, which is the longest interval between betas since 10.0.1 first came out.
As the version number indicates, tvOS 10.0.1 doesn't include any front-facing features. Apple lists it as including bug fixes and improvements in the OS.
There are a couple items listed under notes and known issues though. The only known issue to be aware of is, "When a search keyboard is configured to be explicitly dark, The 'Hold to dictate search' text may appear in a dark color."
There is no public beta for tvOS, but if you're anxious to get your hands on the latest, it should ship to the public this month, alongside iOS 10.1, macOS 10.12.1 Sierra, and watchOS 3.1. In fact, it's possible that the company might release it on the same date as its big Mac event, which is scheduled for October 27.