During a panel at SXSW, Borderlands 2 developer Gearbox has revealed a new vault hunter is coming to its RPG-fueled first-person shooter.
"Deep beneath Pandora, an experiment has escaped," a teaser for the DLC announced, revealing a silhouette of the new character decimating enemies. "Bandits beware, a new vault hunter is coming. More mayhem awaits."
Details for the second add-on character were scarce, much like the Pandora wasteland; however, the teaser (which you can view above) leads us to believe the new character is melee-focused. Gearbox franchise director Matt Armstrong wouldn't reveal the exact release for the DLC during the panel but added, "DLC is announced on a very tight schedule, and I don't think you'll have to wait long until you see that character."
Source and video of new character: http://www.joystiq.com/2013/03/08/gearbox-teases-new-borderlands-2-vault-hunter-dlc-at-sxsw/
EDIT: Some sources say that this could be released late this month (March) because of how sales work during this quarter.