Update: MuggleNet has medium and high-resolution versions of the new 30-second commercial online.
Thanks to Jenna at DanRadcliffe.com for screencaps of Emma & Rupert's appearance on Nickelodeon Takes Over the Super Bowl as well as video of the new trailer -- check it out on their main page.
Thanks to Andrew at thepotterprofile.com for a transcript of their appearance.
Thanks to Wandless Magic you can now see Emma & Rupert on the Nick show as well as the trailer (must have window media to view).
TLC has a transcript of the new :30 second commercial.