YouTube as you know it is about to change dramatically 

The way you experience YouTube may be dramatically different before the end of the year. According to multiple sources, the world’s largest video-sharing site is preparing to launch its two separate subscription services before the end of 2015 — Music Key, which has been in beta since last November, and another unnamed service targeting YouTube’s premium content creators, which will come with a paywall. Taken together, YouTube will be a mix of free, ad-supported content and premium videos that sit behind a paywall.

Source: YouTube as you know it is about to change dramatically | The Verge