I was browsing YouTube, when suddenly I saw these two UI's:

First :
http://img695.imageshack.us/img695/3971/newyoutubeui1.jpg

Second:
http://img28.imageshack.us/img28/8206/newyoutubeui2.jpg

Did anyone see this before?

Sweet, sleeker video player! I wanna try it!

The first one is new, very clean player! The second is almost the same as the default view.

Yeah, they just moved the volume button to the left..

is there a sth like PREF Cookie?

<<Yeah, they just moved the volume button to the left..>> to avoid overlapping menu's thanks to reddit bitching about it =]

http://blogoscoped.com/forum/168815.html
http://www.reddit.com/r/IAmA/comments/bcb14/im_a_youtube_software_engineer_working_on_the/c0m1hne

Sorry for the late reply you guys, but no.
I used incognito mode on Chrome, and before i took the screenshots i quit the browser.

:/

Check out the latest screenshot on the official youtube blog:
http://youtube-global.blogspot.com/2010/04/celebrating-curators-as-seen-on-comes.html