That aforementioned navigation bar includes a scrolling 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 Find page. The latter offers up a whole new way to search for content, across recommended categories as well as content types (that includes movies, tv shows and more).
Another new feature is the ability to have 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 whose profile it is.
The new Fire TV UI will roll out to the Fire TV Stick (third-gen) and Fire TV Stick Lite over the coming weeks, with an eventual roll out to other Fire TV devices early next year.