YouTube has a new design. However, it looks like they are still beta testing it and some people are not able to see the new design yet. As far as I know, only those who browse YouTube with Chrome can notice the new layout. Some surfers on Firefox can activate it, though . I tried to browse YouTube with Internet Explorer, and it was impossible to get their new layout.
If you are using Firefox and can’t see the new version of YouTube, you can do this to activate it.
Open YouTube.com in your Firefox browser, and paste this line into the address bar:
Reload and you are done. You will see a welcome message. Here are some other screenshots.
Youtube will release this Layout for everyone soon. However, I think it’s important for bloggers and webmasters with a strong presence on YouTube to get an idea of the new layout before it goes public. Enjoy.