I wouldn't get my hopes up for 3.0. Avalanche/Disney Interactive learned their mistake late last year. While it's possible to create, write, design, rig, animate, program, and render a play set in one year, I wouldn't place any bets that there will be more Disney Original content. I think 3.0 will most likely address the bug issues of 2.0.
But who knows? It's entirely possible that we just get only one Star Wars play set and 2 or 3 Disney Originals sets in 3.0. Only time will tell, because nobody from Avalanche will.