Nice. Nelson's just confirmed a Battlestation's Pacific demo is on Live now.
Experience one war through two epic sagas where you will be a part of history or change it. This is the official demo for Battlestations: Pacific and includes one mission from the US campaign and 2 multiplayer modes available to play in single player only against the AI. The full game features 2 single player campaigns with 28 missions in total, over 100 air, sea and undersea units and 5 new multiplayer modes that can be played with up to 8 players.
Get to it. It's out for 360 on May 15. A PC version's on the way, but hasn't been dated yet.