BioWare has just released the free downloadable content pack for Mass Effect 3. Titled "Resurgence", the DLC adds a host of new unlockable content including weapons, consumables, and characters for each class in the game's cooperative multiplayer mode.
These classes include the Asari Justicar, Batarian, Geth, and Krogan Battlemaster. Additionally, the pack also includes two new maps, Firebase Condor and Firebase Hydra.
The pack is now available for download on the PSN, Xbox Live, and through Origin on the PC. It's entirely free for anyone who owns the game, and shouldn't be confused with BioWare's "Extended Cut" DLC which they plan to release in Summer.
Granted, even though the DLC is free, some fans on the BioWare forums have already begun to complain about BioWare's priorities. Make what you will of it. At least it's free.