I found a video for seaon 3 premiere.
http://www.cbs.com/primetime/fall_showcase_2007/Scan down to criminal minds.
I can't find this video... :(
You have to scroll down a bit to get to Criminal Minds. We also had a little discussion going on about this under the "season three" thread. Apparently it's a reworked version of the "Doubt" episode we never got to see. It looks good! I can't wait! :D