Zynga has announced that it has purchased NaturalMotion for $527 million. NaturalMotion being the creators of the Euphoria and Morpheme animation technology as used by Rockstar in Grand Theft Auto IV, Red Dead Redemption, Max Payne 3 and most recently Grand Theft Auto V.
Previously Rockstar had licensed RenderWare technology for use on games developed on the PlayStation 2 and original Xbox, including Manhunt. After Criterion Games was bought by EA they decided to create their own proprietary technology, resulting in the Rockstar Advanced Game Engine as used on their PlayStation 3 and Xbox 360 titles and a secondary engine developed at Rockstar Leeds for use on their handheld titles and Manhunt 2. It is thought that part of the reasoning behind this was to avoid lining the pocket of a competing games publisher.
It may be some time before we hear from Rockstar regarding any possible future use of the technology within their games as at present the only announced title that Rockstar have in development is Agent. For their part NaturalMotion have said that they plan to continue licensing the technology.