ZeniMax, who most recently acquired Tango Gameworks and Shinji Mikami, have now got hold of MachineGames. The studio is packed with the guys from Starbreeze Studios that made the original Chronicles of Riddick. While this isn't technically official, the studio has filed to change their name to ZeniMax Sweden AB so it's looking pretty much like a done deal.
ZeniMax are now looking like a behemoth in the industry what with iD Software, Bethesda, Tango Gameworks and now these guys and more.
Source - http://www.computerandvideogames.com/article.php?id=273890?cid=OTC-RSS&attr=CVG-General-RSS