Mercenaries 2 has been covered many here at Co-Optimus. Having played a bit of the game, it seems like a decent mercenary simulator. Well, for those of you clamoring for an update for Mercs 2, your prayers are being answered. According to Shacknews, an update for the game will be coming out on October 13th for the 360 and PS3 versions of the game. The update will add cheat codes to the game (essential for a game like Mercenaries 2) and several new playable characters.
On the co-op front, the update is supposed to loosen restrictions for playing with buddies from other regions. So, sounds like everyone's getting a bit of what they want.