The PC users are getting a patch. New hidden levels, new music, better graphics, less bugs and basically a better game. KOTOR 2 restored is what they are calling it. Its only going to be on PC though.
I paid $50.00 for my KOTOR 2 game from obsidianent. My PC stinks but at least obsidianent would be smart enough to make a little Xbox disk updater so when you go to their website you can have them send the Xbox version updater to your house.