2K Games announces Minerva's Den, upcoming downloadable content for BioShock 2 they say will be the final piece of DLC for the underwater shooter sequel when it is released this fall. The DLC will require the original game, but they say it will offer "a self-contained narrative experience that puts players in the role of an all-new character who has teamed up with Brigid Tenenbaum to unravel a dictator’s stranglehold on a key district in the distinctive city under the sea." Here's a bit more:

Prepare to explore Rapture Central Computing, a never-before-seen district of the undersea city, and uncover the dark secrets hidden in its founder's past. Wield new high-tech weaponry and a devastating new Plasmid to best the towering threats in Minerva's Den: more dangerous Splicers that command the power of the elements, upgraded Security Bots that throw rockets and lightning bolts, and even a never-before-seen type of Big Daddy. Developed by 2K Marin, Minerva's Den offers new twists on the story-driven experience that drew players into BioShock 2 when it launched earlier this year.