Battlestations: Midway fans will be able to download an "Iowa Mission Pack" when they next pop onto Xbox Live, providing they're willing to fork over 400 Microsoft points (GBP 3.40 / EUR 4.65) for the privilege of serving. Sorry, of being served it.
The Iowa Mission Pack features a new multiplayer map called Battle of the Sibuyan Sea, along with a single-player challenge mission called Raid on Truk and five new units - the titular USS Iowa battleship, the IJN Shimakaze Destroyer, P-38 Lightning (Allied) and Gekko (Japanese) fighter planes, and a Japanese mini-sub.
It weighs in at about 170MB and, er, isn't available in Japan. Hrm. You can read more about the game, if you're new (in which case, welcome!), in our Battlestations: Midway Xbox 360 review.