2k Games revealed today that Bioshock 2's new downloadable content expansion will hit Xbox Live, PSN and Steam on Thursday, March 11th. It's what's being called as the Singular Solutions Tester Pack.

Sinclair Solutions Tester Pack, the first of several planned downloadable packages, contains a number of customization features that will allow players to further their character's development in BioShock 2's multiplayer modes and provide a deeper multiplayer experience. The pack includes:

• Rank increase to level 50 with Rank Rewards
• New playable characters - Louie McGraff and Oscar Calraca
• 20 new trials*
• A third weapon upgrade for each weapon
• Five additional masks*

*Some items are only available after a player achieves a rank of 41 or higher.

You'll be able to purchase the DLC pack for 400 Microsoft Points or on the Playstation Network for $4.99. A couple of screenshots are after the jump.