New environments, characters and most importantly harvester fights (yeahhh!) appear in this new Mass Effect 3 trailer, highlighting upcoming single-player DLC, Leviathan. The content pack is the first to release since the game’s launch – bar the Extended Cut material – and is said to contain plenty of new canon regarding the Reapers. No idea who the bloke wandering around in the trailer is but presumably Commander FemShep is actually in it. The DLC launches on August 28 for PC, PlayStation 3 and Xbox 360.
Source: EA YouTube