As we'd all expected (well, hoped for) It's been confirmed that the PSP version of
LittleBigPlanet will have 'Cross-Talk' functionality tying it the the PS3 release, enabling owners of the original to access bonus content for the game.
There's no word on quite what this will entail, but exclusive costumes for owners of both versions seems like a good bet.
This comes from
Joystiq, which has apparently had a peek at a leaked retail sell-sheet for the game. That sheet further reveals that, unsurprisingly, there will be a PSN demo and a "multi-million dollar marketing push" for the game.