A post on the Bioware forums has revealed that two new bits of DLC will be coming to Mass Effect 2's Cerberus Network tomorrow, February 9. Players will be able to download both a new set of armor and a new shotgun for free via the game's DLC pipe. The Cerberus Armor ups heavy weapon ammo capacity, shields, and health by 10 percent each, and the M-22a Eviscerator Shotgun is "a longer-range shotgun with armor-piercing loads" that "also violates several intergalactic weapons treaties."
But those "treaties" were never ratified by the Citadel Council anyway, so who cares? The new DLC should be released by 2pm ET, so you can start ganking with the new space shotty then.