Not big changes, new predator weapon, predalien with headbite, a human with 360* radar and some new maps, you could update avp 2 and get some of the maps, the alien queen and the exosuit in the homepage, but the cd still have the stupid sierra "insert the cd please" I hate that, I know it's for the piracy, but damn, I bought it, and i's a pains in the *ss put the cd in each time you want to play