Youtube releases a new membership - Youtube Red. For $9.99 a month you will get an ad-free experience and 2 more features.
First is offline watching. It will be possible to download a video, and watch it later without Internet connection. With second you can play videos on your phone to tablet in background mode. So, you can switch between apps and your it will keep playing.
Starting from October, 28 Youtube Red will be available in the US. Well-known names are also involved: PewDiePie, Rooster Teeth and Lilly Singh. Moreover, some parts of content will be available only for Red users.
Take a look at two videos by The Verge, which describes new membership in details.