We could probably piece together a reasonable lineup for that 2nd Empire Wave (since it has been confirmed by Hasbro that we're getting to ESB waves in 09). There have been a lot of rumors over the past couple years that could maybe fill out that wave. Also, Hasbro mentioned at a SSG Q and A (I think) that the ROTJ and ANH waves would be 8 figure waves, so I'm guessing both the ESB ones are 6 - so who do you think will be in this wave? Some rumors I recall:
Willrow Hood (confirmed)
Bespin Han Solo
Hoth Luke Skywalker
Hoth Princess Leia
I'm sure there are others that I'm forgetting as well. I'm sure we won't get all of the "big 3" in one wave, they usually like to spread those out a bit, but I wouldn't mind seeing at least one "ultimate" resculpt of either Bespin Han, Hoth Luke, or Hoth Leia. We'll hopefully getting the ultimate Hoth Rebel Soldier in the earlier ESB wave, and we've already got a spiffy Snowtrooper. They seem to be filling out the Empire lineup pretty nicely at that point, although the "other" version of the Hoth Rebel and the various Snowspeeder Pilots would be nice as well (Luke, Wedge, etc.).