It seems that the lone redditor who once supplied the details for the Mass Effect 3 DLC, "Earth," was correct. Microsoft confirmed today that Mass Effect 3: Earth Multiplayer Expansion will be released July 17 for Xbox 360.
On reddit, user "Derptemp6698" reported that "The fighting is fiercest when it's your home at stake! Mass Effect 3: Earth adds mods, gear, and new maps for Rio, Vancouver, and London. It features 3 new weapons: Piranha assault shotgun, Acolyte pistol, and Typhoon light machine gun. Six new human N7 classes are also available: Destroyer, Paladin, Demolisher, Slayer, Shadow, and Fury!"
The DLC is totally free according to a blog entry by Microsoft's Major Nelson.
The Earth Multiplayer Expansion joins the Rebellion DLC, which offered:
* New characters like the Vorcha, Male Quarians, and ex-Cerberus operatives
* Two new maps
* New In-Mission objective
* New gear slot
* New weapons like the Cerberus Harrier, Krysae Sniper Rifle,and Reegar Carbine