Just found this over at the Digital Bits.
That top image is, of course, actor Ian McDiarmid as Emperor Palpatine, newly inserted into The Empire Strikes Back in place of the original actor (bottom image). This image has been circulating around the Net for the last couple of days, and we know it's the real deal. One other scene we've been told by sources is being revamped is the CGI Jabba scene from A New Hope. Look for the digital Jabba to be replaced by a much better looking CG version (likely based on the Episode I digital model of the character).
Tell you what... I don't mind either of these changes. Better still, I'd eat a whole freakin' herd of Bantha if Lucas would just restore the Han/Greedo scene in A New Hope so that Han shoots first again. Anyone out there care to join me? Cross your fingers, folks... and fire up the barbecue pit.