Well, it looks like InnovationFIRST has published the RC reference guide for this year, along with the 2003 dashboard port specs, which are identicaly to 2001/2002. As far as I can tell, the only difference from previous years is that there is now autonomous mode.
Basically, it requires that the program control the robot without any input from an operator. It would be as if none of the joysticks were connected, but the robot still moved around and functioned on its own.