Borderlands 2

Official Announcement
Borderlands 2 was officially announced on August 3rd, 2011. The expected release date is currently set in Take Two's (2k's) fiscal year of 2013, beginning Q2 2012.

Gearbox Software will release a sequel sometime in 2012 according to a report from Eurogamer. A source close to the project told the website the game is coming to PC, PS3 and Xbox 360.

"Gearbox Software’s co-op lootfest is back with a host of exciting changes to the first game's addictive formula. The September issue of Game Informer contains 12 pages of exclusive details and screenshots from Borderlands 2, and outlines the numerous improvements the developer has in store for your return trip to Pandora. Don’t expect just a couple bazillion more guns this time around. Gearbox is introducing new and more diverse environments, smarter and more powerful enemies, and an improved mission system capable of delivering a better story. This and much more will be revealed in the story, as well as our full month of additional online content."

Classes
Borderlands 2 will have all new classes. One class and character has been confirmed, Salvador the gunzerker. He will be capable of dual-wielding any weapon in the game. The characters from the first game will not be returning as playable classes but as NPCs.

Eridium
A new element, called Eridium has been confirmed to serve as a form of currency and a way to upgrade weapons and vehicles.

Additional Details

 * The new class shown on the game informer cover has the ability to dual wield weapons for a limited time among other bonuses, in a berserker like rage mode.