Metal Gear Rising: Revengeance has been confirmed to get a PC release. This was posted on Twitter by Jean Pierre Kellams, creative producer at Platinum Games.
I am excited to see Rising hit the PC. BTW – direct all please direct PC MGR questions to @konami.
— JP Kellams (@PG_jp) 17 mei 2013
No further details were given, but from the tweet it seems like questions directed at Konami on this might be answered.
Source: JP Kellams Twitter