I don't know exactly what else Harmy has left to do on the visual side, but I'm in the process of finalizing what I deem to be the best possible version of Empire's 35mm stereo mix.
I'd never spent much time listening to it until recently (the video tape I watched as a kid was the '93 version), but I've definitely developed an appreciation for it. The difference in quality between it and the '93 mix is less pronounced by far than it is for the first movie, and it certainly makes for a worthy choice of soundtrack to watch the movie with. I still have a few things to straighten out in terms of achieving GOUT-synch, since the early laserdiscs were missing so many frames at reel changes, and the audio is prone to changing speed in these areas, making for noticeable jump cuts and loss of synch. But it's close to being done.
Also, the new 5.1 mix is virtually complete, requiring only final listening tests to ensure quality before I render it out. Various timing issues with the LFE channel from the previous version have been corrected, meaning that the bass is now much more tightly locked to the soundtrack as a whole. Everything is just more polished this time, and I'm really looking forward to seeing it paired with the improved visuals of this new edition. ;)