EA Montreal have announced the first post-launch downloadable content for the cooperative shooter Army of Two: The 40th Day, promising two new co-op campaign maps that will see Salem and Rios returning to the war-torn Shanghai battlegrounds for more mercenary chaos.

Chapters of Deceit features two all-new co-op campaign maps. In the new chapters, players stumble upon information that could lead to ending the invasion by Jonah and his 40th Day Initiative army. However, they quickly learn that everyone is out for themselves and to trust no one but their partner.

Look for this one on Xbox Live and PlayStation Network on April 1st 2010 (assuming it's not a fools day prank, that's most likely April 2nd for Australians)

Watch the Army of Two: The 40th Day - Chapters of Deceit trailer right here on AusGamers.