Sadly, yes. However, the scene has been tweaked a bit to make it look....well, not so piss-poor. There's also the revised Jabba, which uses the same computer model as the Jabba in Phantom Menace. Other than that, the only big, BIG change is the addition of Hayden to the end of Jedi, as we've discussed before. Beyond that, the changes are supposed to be merely cosmetic, such as improved lightsabers.
would be nice if they fixed up some of the dated CG used in SE ANH's dog fight scene. I swear rogue leader's graphics look better.