Is anyone else getting inappropriate previews displayed after the Apple TV is used but before it goes to sleep? I would like to get these blocked if anyone has any suggestions... Thanks.
Conference Mode usually just has a static image. If you are talking about the "tv" app that tvOS defaults to the top row of apps (like @loyster is talking about, showing previews of movies) you can use your MDM's function of a Home Screen layout payload in a Configuration Profile for tvOS and hide the tv app in a folder.