Kill Team is an arcade shooter with Co-Op functionality (doesn't specify if it's 2-player local or online), released by Relic.
It should be here at the beginning of July and ties in to the upcoming Warhammer 40'000: Spacemarine game.
For fans of W40k this game is going to be great, for those of you getting the Spacemarine game, this is a must.
By finishing the first mission of this DLC game, you will unlcok an exclusive weapon for use in Spacemarine, that is only available to those who pre-order the PC version of the main Spacemarine game.
Follow the link, to Relics site for more info: (They also have a Face Book page with a video, search for Spacemarine).
June 2, 2011 - Kill Team Announced - Relic.com