Best image I could find on short notice. Had a spy shot of Shaw in that makeup and costume gotten out back then, it would have been a big deal. At least give me points for using the original shot and not the SE. ;)
The biggest leak on Episode III was the entire movie right before it opened. I imagine they will keep workprints under lock and key this time.
With principal photography complete, they better make sure all the shooting scripts are accounted for.