XCOM is now scheduled for “fiscal 2013,” which is sometime between April 1, 2012 and March 31, 2013.
Borderlands 2 is in the same boat: fiscal 2013.
Spec Ops: The Line has also seen significant delays, and Take-Two has tweaked its release window to “first half fiscal 13,” which would place the game sometime before the holidays.
And what about Grand Theft Auto V? As per usual, Take-Two is quiet on the latest from Rockstar Games. The company is typically conservative about disclosing anything regarding Rockstar products, and it’s not surprising Grand Theft Auto V is no different. Both the platforms and and release date (even year!) are both listed as “TBA.” Perhaps hope for a Wii U version?
Lastly, BioShock Infinite remains a "calendar year 2012," which means it's on track for...well, next year.