The question for the new release date of Bioshock 2 has been officially answered. Take 2 rescheduled the game to February 2010.
2K Games has officially announced February 9, 2010 as the international released date of Bioshock 2. Initially the game was scheduled for October 30, 2009, but had to be delayed. According to the publisher the developers will use the additional time to make sure the game can deliver what the fans expect and deserve.
Recently the publisher also released the first trailer of the Bioshock 2 multiplayer part. The video is setup like a commercial of Sinclair solutions, one of the companies in Rapture, and contains in-game footage.