This hasnt been confirmed but heres a Ultralisk for ya
What ya think?
http://www.blogsmithmedia.com/www.wowinsider.com/media/2008/02/dsc_1005.jpg




and heres a Fan Art
http://img90.imageshack.us/img90/7310/ultrahiresle8.jpg

Is confirmed Now! :)

Yep it is :)
rumor was fairly close to the real thing as well.