Just saw it in IMAX at Toronto Paranount. Awesome. You haven't really seen it till you've experienced it in IMAX. When one of the cars in the freeway chase flipped over the CONCRETE BENEATH MY FEET shook. WICKED!!! The panoramic shots of Zion and the docking bay looked way better. On a slightly negative note Morpheus's pores were the size of large craters. Yuk. Seriously though go to the IMAX if you get the chance. No extra scenes or anything. The full credits and the Revolutions trailer are still there, (yes I once again put up with the 5 minutes of crappy 'music' to see the Revolutions trailer which was torture in blistering IMAX sound). The original 2.35:1 aspect ratio is preserved (unlike Star Wars) so there is black at the top and bottom of the screen, but the screen is still so huge that this is not a problem. Much better to have a little letterboxing than hacking off the sides of the picture. Totally ROCKED!!!
Did I say that allready? Sorry.