Rising is being Developed on PS3
Atsushi Inaba has today confirmed via Twitter that Rising is using the PS3 as its lead platform.
You create a "making of" video where the game is being played on an Xbox 360 and everybody jumps to conclusions. PS3 users everywhere worried for the future of Metal Gear Rising Revengeance when they saw an official video in which a developer used the 360 remote to control the game, knowing the history of poor ports from 360 to PS3.
It turns out though that those worries were unfounded, the PS3 is definitely the lead platform for the game. The 360 controller was being used on the PC since there's no official way of using a PS3 controller on a PC.
This was confirmed via Twitter by the game's producer Atsushi Inaba, a nice surprise since he's being understandably closed over most things.