If you use YouTube's app on your TV, get ready for a new UI (finally!). The app has a much cleaner look now, in line with Google's Material Design, and includes features that you're used to seeing on your computer, smartphone and tablet, such as a guide that pops up on the left side, latest videos from your subscriptions and curated channels. The refreshed interface should pop up soon -- it's available now with Xbox One, and Google plans to roll it out to other devices within the next few weeks.