Mass Effect 3's single-player DLC, Leviathan, on August 28 for the PS3, Xbox 360 and PC. European PS3 users will need to wait an extra day, unfortunately – Leviathan will be available on PS3 in Europe on August 29.
Mass Effect 3's Leviathan DLC will expand the single-player campaign, tasking Shepard with discovering "the most closely guarded secret in the galaxy before the Reapers silence it forever." Leviathan is set during the Mass Effect 3 campaign, prior to the controversial conclusion of Shepard's tale. EA has not yet revealed a price for Leviathan.