I haven't managed to download the clip yet, but the screenshots look really great.
I'm mostly curious to know how the colours look in the luke vs vader duel on the catwalk, as that scene has always looked really blue in the 2004SE and slightly red tinted in the GOUT and other sources. It's one of the most dramatic/important scenes in Empire, and I've always hated how they made it look in the 2004 release.
Edit: When I say catwalk I mean the bridge bit where we get the Vader reveal.