This aforementioned navigation bar features a drop-down list of your favorite streaming apps, as well as separate tabs for your library, the aforementioned home screen, a page for live programming and, last but not least, a new page for research. The latter offers a whole new way to search for content, in recommended categories as well as content types (which includes movies, TV shows and more).
Another novelty is the possibility of having up to six user profiles for different members of your household. This way you can customize the experience and exactly which channels you want, depending on the profile it is.
The new Fire TV UI will roll out to Fire TV Stick (third generation) and Fire TV Stick Lite in the coming weeks, with a possible rollout to the cube later.