Android TV is still in its early stages, however now Google has a way to change the UI effortlessly without a system update. The Android TV launcher is currently in the Play Store, and it evidently accompanies some bug fixes.
Android TV Launcher is the jumping-off point for starting all activities on your Android TV entertainment device. The Launcher is optimized to put content at the center; from casual movie-watching, to edge-of-seat, immersive gameplay. It’s all about finding and enjoying content with the least amount of friction and providing quick access to all the features Android TV has to offer.
The launcher is vastly simplified compared to the standard Android version, but it serves as the jumping off point for all the apps and content available on Android TV. The app will obviously only install on Android TV boxes, which right now means the Nexus Player and ADT-1.