Greedo still shoots first, but Solo moves different and it looks like they fire around the same time. It still looks horrible, but doesn't ruin the movie (at least for me it doesn't).
Other changes. Might be concidered spoilers I guess.
The new Jabba scene looks a lot better than the SE version, but still not that great.
In Empire Strikes back the Emperor is replaced by the actor that plays him in Episode 1, 2, 3, and 6. I like the ideal of the change, but the new scene looks strange.
Hayden is now at the end of Jedi instead of Shaw in the force ghost scene. Eh... I don't know. I'm waiting on Episode 3 to see how or if this is explained.
The images are cleaned up, but there is still problems with light saber colors. (Lukes stays white then switches to green in the falcon scene in ANH/Vaders saber is now pink sometimes.)
I thought with the cleaned up images the SE effects blended in better with the film.