The third beta of tvOS 10.2 has been seeded to developers today. This update comes two weeks after the last one. In this version we find some tweaks to the way you scroll through lots of content. It’s likely that there are other smaller changes but nothing that we have noticed.
To get this version developers can go to the Settings app and find it under system. If you aren’t on the beta yet you’ll need to connect the Apple TV to your computer and install it from there.