Lando ( Outfit not specified but I hope its Cloud City )
Of course we're still going to see Luke Cloud City and Obi Wan Revenge of the Sith, plus the stormtrooper and Anakin Revenge of the Sith.
I heard this on the sideshow message boards from someone that seemed to be in the know.
Luke Jedi Knight and C3PO are also possible. Chewbacca is rumored too.
And I'm sure they'll do Darth Vader.