The third beta of tvOS 10 has now been seeded to developers. We find this update two weeks after the last one. This update is available OTA via the Settings app. If you do not yet have this OS installed yet, you can download it from the Apple Developer Center.
New with this beta is only some performance improvements and bug fixes. We don’t see anything major with the UI. If we do notice something new we’ll be sure to update this article.