According to a Sony Computer Entertainment America (SCEA) rep on the Official PlayStation Boards, LittleBigPlanet will be receiving a limited public beta at some point this month.
"In terms of LittleBigPlanet, the game itself is all but complete however we’re looking to run a test of the sharing, uploading, downloading and multiplayer server side of the game before it launches to ensure that under a large number of users it does everything it is supposed to," said the representative.
“There will be a limited public beta test for LittleBigPlanet in September. If it will be possible to ’sign up’ for this test, full information on how to do so will be made public in advance of the test. Similarly if the test is going to be conducted in an invitation-only we will let you know ahead of time.”
LittleBigPlanet is scheduled for release in October 2008.