Those already in the beta group will "automatically be in" LBP2's beta. The studio promises "more news soon" on the beta. It's out November.
Yes with LittleBigPlanet 2 releases exclusively on PS3 November 16th in the US, Media Molecule had better kick this beta phase into gear if they want worthwhile feedback between now and launch day. There's no confirmed EU date yet.
"There will be an LBP2 beta soon. We will have some more news on how we will recruit for this beta soon, but in the mean time i wanted to drop in and say that you will all be in witha chance to get in," posted dev mouthpiece 'Spaff_Molecule'.
LittleBigPlanet 2 has big improvements over the first game, see the trailer below.