Irrational Games, developer of System Shock 2 as well as the upcoming BioShock (X360, PC), may be working on a successor to Microprose's PC tactical sci-fi classic X-COM: UFO Defense. Evidence suggesting the new game's existence comes by way of a resume found on the official website of law firm Fierst, Pucci & Kane, LLP. It was listed in the CV of firm partner Frederick U. Fierst, which states that among Fierst's clients are "Ken Levine and Jonathan Chey, founders of Irrational Games LLC." The current version of the document has had the pertinent reference removed, but a cached version of the document lists the following games as being credited to the Boston, Massachusetts- and Canberra, Australia-based developer (emphasis added):
System Shock 2, Tribes 3, SWAT, X-Com, BioShock, Freedom Force
...Update: Shacker baron calamity points out that Take-Two Interactive acquired the X-Com property in full from Atari in 2005, just a few months before Irrational Games was acquired by the publisher.