Titled 'Mr. Torgue's Campaign of Carnage', the DLC will introduce the titular Mr. Torgue, head of the Torgue weapons company.
"Are you a badass enough badass to survive 'Mister Torgue's Campaign of Carnage?'" said a tweet from a Gearbox account for the character. "I'm legit curious cause I dunno you that well."
The add-on is the second of four pieces of campaign DLC releasing between now and June 2013.
The first add-on was 'Captain Scarlett and Her Pirate's Booty' which released last month.
Each pack costs $9.99 (£6.30) on PC and PS3 and 800 Microsoft Points (£6.80 / $10) on the Xbox 360.
All four pieces of DLC are included in the Season Pass, which can be picked up for $29.99 (£18.90) on PS3 and PC, and 2400 Microsoft Points (£20 / $30) on Xbox 360.
Released last month, Borderlands 2 was the biggest-selling launch of the year until the release of FIFA 13.
A release date for 'Mr. Torgue's Campaign of Carnage' will be announced soon.
> Read Digital Spy's 'Borderlands 2' review
Watch the launch trailer for Borderlands 2 below: