YouTube Leanback is officially a part of Google TV, and as devices for the latter become available, users can view videos based on their subscriptions and viewing histories, which launch immediately upon selecting the Leanback option.

Product marketing manager Camille Hearst wrote on the YouTube Blog:

Back in July, we announced the launch of YouTube Leanback in beta. If you didn’t get a chance to check it out, Leanback is a new way to experience YouTube on a big screen. We named it “Leanback” so you could do just that: Kick back and, with as little effort as possible, enjoy hours upon hours of YouTube videos. When you go to www.youtube.com/leanback, you’ll note that videos start playing immediately, are always presented in full-screen and HD (when available), and you can easily browse using just the arrow keys on your keyboard.

Today, YouTube Leanback moves forward into a new role at the center of the YouTube experience on Google TV, which you’ll start seeing in U.S. stores this week. When you view Leanback on Google TV (or online), videos based on your subscriptions and viewing history will begin playing immediately. If those don’t pique your interest, Leanback offers 10 channels, updated daily, featuring popular and interesting videos in genres like Comedy, Entertainment, News, Science & Technology, How To & Style, and more. You can also watch full-length movies and TV shows rented from youtube.com in the highest quality.