More casting for Indy 4

I just saw an article on IndianaJones.com stating that young actor Shia LaBeouf, currently starring in Disturbia, will be cast in Indiana Jones 4. Obviously he's very excited about it, though I find myself wondering what kind of character he'll play. My first thoughts were actually of Short Round from Temple of Doom, but alternatively I wondered if he may play Indy's son (presuming he has one, of course). Time will tell, though.