Gearbox has released new Borderlands: The Pre-Sequel DLC today called The Baroness. The new DLC pack will focus on Sir Hammerlocks sister, Aurelia Hammerlock.
Lady Hammerlock, which is the heir to the Hammerlock family fortune, will be a new playable character which will include her very own skills and skill tree to play around with.
The DLC Pack will cost you $9.99, if you have not purchased the Season Pack which will cost you $29.99, which includes all four DLC packs which will be coming to the game.
During the PAX South "Inside Gearbox" panel, the developers mentioned they are working on a DLC pack which will make everyone's favorite rolling trashcan, Claptrap a playable character.
Source: Borderlands Website