Warner Bros. Interactive Entertainment and DC Entertainment have revealed the trailer for the first story-driven add-on for Batman: Arkham Knight – Batgirl: A Matter of Family. It's set prior to the events of Batman: Arkham Asylum, but most importantly, it will allow you to take on the role of Batgirl for the first time in the Arkham franchise. Batgirl: A Matter of Family will be available July 14th if you have the Batman: Arkham Knight Season Pass, or you can purchase it separately on July 21st for $6.99 / £5.79 on the PlayStation Network and Xbox LIVE.
Here's some official background:
When The Joker kidnaps Commissioner Gordon and holds him hostage at the Seagate Amusement Park, Batgirl and Robin must fight against the odds to save him and avoid falling victim to The Joker’s sinister plan. Trained by Batman, Batgirl’s combat combines with unparalleled hacking abilities to take down enemies, control objects and solve puzzles.
