According to CVG, there is a source that is saying Sony Studio Liverpool is currently in the development process of bringing LittleBigPlanet to the little PlayStation Portable.
Though there are currently no confirmed statements about this project nor are their any other details, we would naturally assume that the game would be physically possible due to the physics already instilled into such PSP titles as Loco Roco. The possibility of linking this up with the PlayStation 3 version is also quite enticing. This would open up the opportunities to potentially create levels on the go or try to finish up levels you’re currently working on.
We’re not going to hold our breath in the event that this source is completely wrong; however, we have high hopes for such a possible title. We’d love to carry around Sackman in our pockets for our everyday convenience. We’ll keep you posted if this rumor is confirmed within the coming months.