The subaqeous shooter's super-splendid single-player downloadable content will arrive on May 31 via the Games for Windows Marketplace, priced at 800 Microsoft Points ($10).
The DLC takes players into the previously-unseen Rapture Central Computing district to probe the mysteries of its founder. Minerva's Den is also delightful, I can say after buying a second copy of BioShock 2 on Xbox 360 after the PC edition was cancelled, just so I could play it. I still don't regret that.
Minerva's Den was released for Xbox 360 on August 31, 2010. A PC release was promised at "a later date" but come October, 2K revealed that it'd been scrapped, as had a PC release of the 'Protector's Trials' challenge mode DLC.
As fans were none too pleased were this turn of events, later that month 2K decided to plough resources back into the project and get the two out, along with a final patch. Protector's Trials was free on PC when it launched in March 2011, having cost $5 on consoles.
For a little more on Minerva's Den, check out lead designer Steve Gaynor's blog post about its real-world inspirations. Computers!