Just looking back at past Q and A's, don't we have the following confirmed for this (8 figure) wave so far?
New Jedi Luke Skywalker
New Leia of some sort
New Ewok of some sort
New Rancor Keeper
So what else do you think is on the way for this wave? I wouldn't mind seeing an all-new Nien Nunb as has been mentioned, and a new Ackbar would be sweet too. There's a lot of other resculpts I wouldn't mind seeing as well ("ultimate" Endor Soldier/Logray/Wicket/Prune Face/Ree-Yees/etc.), but there's some other all-new characters that could go in this wave as well.