As had been expected, Electronic Arts today officially announced Army of Two: The 40th Day, the co-op action game sequel featuring the two-man team of Salem and Rios.

In the game, Salem and Rios find themselves in Shanghai, China, which has been almost completely ruined. As they make their way through the city, they'll try to uncover the secret of the 40th Day.

According to EA, gamers can expect a lot more co-op moves (more ways to slap butts please), resulting in a more "organic and immersive" experience.

In development at EA Montreal, Army of Two: The 40th Day is out this winter for PlayStation 3, Xbox 360 and PSP.

Electronic Arts will publicly announce a new project from Army of Two developer EA Montreal next Thursday, March 12, the company revealed in a press release today.

Specifically, the release was a publicly-distributed invitation for "local media" to attend an advance presentation on March 9 at EA Montreal. A release announcing the game will hit March 12, and any subsequent impressions and interviews are embargoed until March 16 at 9 AM EST "in order to ensure fair coverage for media across the globe."

No clues or hints as to the game's identity or platforms were provided. Recent projects out of EA Montreal include Army of Two (PS3, 360), Boogie Superstar (Wii), and Skate It (Wii, DS). The studio is known to be working on Need for Speed Nitro (Wii, DS), and Electronic Arts has previously suggested that an Army of Two sequel is coming.

Adding to the recent revelation that EA DICE's upcoming Mirror's Edge is part of a trilogy, EA Games president Frank Gibeau and Dead Space executive producer Glenn Schofield have disclosed that the company is planning a number of other sequels.

Both EA Montreal's co-op action game Army of Two (PS3, 360) and EA DICE's shooter Battlefield: Bad Company (PS3, 360) have "sequel ideas planned," Gibeau told Variety Meanwhile, Schofield revealed that EA Redwood Shore's sci-fi survival horror game Dead Space (PC, PS3, 360) already has a sequel in the works.

Dead Space debuted at retailers last week, with Army of Two and Battlefield: Bad Company arriving earlier this year. Since its release, Army of Two has been one of the year's best-selling Xbox 360 titles thus far.

Gibaeu also noted that EA's expansion into game-inspired films, books and television shows stems from the somewhat-recent return of EA CEO John Riccitiello, who, in Gibaeu's words, explained that "our fan base would love to experience or learn more about them in linear forms."