Beta testers have still not been chosen. But someone has put up some pics of the beta kit. How accurate they are is beyond me. The orange memory card for example is not needed, and I'm not sure if they will give it to beta testers, or only the press who tried it. They do look like authentic pics though.
Either way, it doesn't matter. Check out the pics below.
http://members.cox.net/volkswagen/XboxLiveBetaBag.jpg
http://members.cox.net/volkswagen/XboxLiveBetaKit.jpg