Google released a new re-designed YouTube channel page for limited users. This new redesigned page comes with cover image feature similar to Google+ profile. So you can add your cover image on YouTube channel home page. And also you can link your website and your social network sites on the right side of the banner.
With this new channel you can show a trailer video on your YouTube channel page, that will only appear to viewers who aren’t already subscribed to your channel. And also new design comes with channel art feature that allows you to set background image for entire YouTube channel page. For creating channel Art image see the below layout and then create your image.
YouTube re-designed page now only available for some YouTube channels like ijustine, DeStorm, EpicMealTime, sortedfood, MysteryGuitarMan, LOUD, and Geek&Sundry. This will available for all users soon.Source - TNW