According to Capcom's press release, the demo will give PS3 owners a real sense of the game:
To get a taste of the action before the launch,Capcom will be giving fans a chance to test ride the game with a downloadable demo available on PSN in February. Push your limits with GP heroes Danny Pedrosa or Andrea Davizioso on the challenging Mugello circuit or against the clock (and your ghost) in Time Trial. As in the full game, players are now able to use the new player assists feature to fully customize their bike and control set up. Matched with all new realistic simulation mechanics, this is the most realistic MotoGP gaming experience to date.
Let us know if you're hot for this motorcycle racing sim.