Yeah, the Stormies have waist and knee paint.
Also, Vader's face no longer has eyebrows, Palpatine is grey colored, and the Imp. Officers are peach colored. Those are all the changes to the minifigs, I also believe slight modifications were made to the Shuttle itself.
I too am waiting to get this set. I was going to, but I blew $250 this week. Perhaps in a few weeks when I can work up some more cash.