Metal Gear Rising: Revengeance is coming to the PC, according to the creator, Hideo Kojima during (from Joystiq). And has been confirmed by Platinum Games creative producer Jean Pierre Kellams via Twitter.
Unfortunately, the release date and the features remain unknown, and no further news can be obtained.
Metal Gear Rising: Revengeance was released for PlayStation 3 and Xbox 360 on February 2013. Platinum Games, the game developer, previously stated that they were interested in making games for the PC and publishing them through Valve's Steam service.
source : gamespot