A couple of weeks ago we told you that YouTube was switching everyone to the new YouTube One Channel format on June 5. Well, that's tomorrow. Those who haven't made the switch have no choice in a matter of hours from now. For those of you not familiar with all the features of the new design, this is the page you want to take a look at. Features of the new design include having a design that looks the same across all devices, creating an "unsubscribed" trailer that introduces you to future fans, creating specific playlists, and an associated channels connection that lets users link to your related channels.
June 5 Is Tomorrow: Start Learning the New Design
For those of you not familiar with it, here's an example from Mystery Guitar Man:
The banner at the top is what you'll see on all devices. The trailer is the first thing you see when you come to his channel, and underneath (not pictured) are all of his various playlists.