Entertainment Earth confirms that the wave 4 cases are different than previously planned. When the wave was first shown boxed, it included ROTS Anakin, AOTC Clone Trooper, Chewbacca, and ROTS Obi-Wan as a carry-forward. There were rumors that Chewie would be delayed so he could fit into the new, taller boxes – though, really, I'm not sure why they even showed him on the orange-accented box when they were pretty clear that he'd be coming on the taller blue-accented box when he was announced at Toy Fair. So I'm guessing this wave will still have the standard orange-accented boxes and the blue-accented ones will debut with the next wave.
Anyway, the wave now includes ROTS Anakin and the AOTC Clone, but includes the two most sought-after figures as carry-forwards: Boba Fett and the Stormtrooper! I still don't have a Stormtrooper, and Boba is still pretty rare, so these are much more welcome than an Obi-Wan repack.
The remaining 6" figures for the summer are ROTJ Luke, Vader, Chewie, and black pauldron Sandtrooper. I wonder if they'll be released as one wave or split up over a few?