Ok so i found what i think is a bug. If you go and hit compare trophies with say me (or probably anyone else) you'll see under Killzone 2 trophies that there are an extra 10 new trophies (go to the very bottom of the trophy list). There's a few Silver and mostly Bronze. Those trophies include description of 2 news maps and the bolt-gun + flamethrower. It's probably a bug of the future new possible release of the map pack, because if you go to the US Store there is no new map packs for that game yet.