Buck Hodges has some good news about how users are displayed in the RTM version of Team System. Instead of using the actual user name (in my case, "1910"), they will use the Display Name instead ("Ljusberg, Anders").

Sure, I'm starting to remember most peoples user numbers by now, but the "Assigned to" drop down is actually rather scary... To be honest, if MS hadn't implemented this I'm not sure we would've been able to use the Work Item tracking functionality of Foundation Server at all.