Borderlands 2 Is Official. Borderlands 2 Is Coming.

Post-apocalyptic shooter Borderlands is getting a sequel. It's called Borderlands 2.
Currently in development, the title is being created by Gearbox Software, who developed the first title (above). Like the previous title, the game is slated for the Xbox 360, PS3, and PC.
"Combining invention and evolution,Borderlands 2 features all-new characters, skills, environments, enemies, weapons and equipment, which come together in an ambitiously crafted story," said publisher 2K Games in an official statement. "Players will reveal secrets, and escalate mysteries of the Borderlands universe as they adventure across the unexplored new areas of Pandora."
Borderlands 2 is scheduled to be released between April 2012 and spring 2013. More information about the game can be found in the latest issue of Game Informer.

Source: Kotaku