2K Marin have announced that they will release the first DLC pack for Bioshock 2 next month, called Sinclair Solutions Test Pack. It will include material for both the single- and multiplayer modes and below you can find a full list of features and three new fancy screenshots.
• 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.