There are going to be significant changes....
Special effect scenes are going to be different. Hayden Christiansen will appear in Rerturn of the Jedi. They've changed the emporer from ESB to Ian McDiarmid (originally, the emporer was played by a woman in a mask - "monkey eyes", they called her). There will be some insert shots at the end of ROTJ to include Naboo. They redid the Jabba sequence from ANH, to fix the CG Jabba. Also, all of the lightsaber effects have been redone to make them cleaner, crisper. Also, the Rankor scenes from ROTJ have been fixed to remove the matte lines. Greedo still shoots first, but the effects have been cleaned up, and now both of them shoot at approximately the same time.
Tons of visual changes. Go
here to find out all of the details.
