If Platinum Games' is working and this (and they probably are) then they should pull a Bayonetta on this one too as a pre-order incentive and that people would love to play it again, even more so remastered in 1080/60. Back in 2014 I kept reading "Platinum Games when will the Wii U get Metal Gear Rising??" and instead it's a PS4 exclusive as it seems.
Platinum Games tend to be quite short so perhaps they'll have time for Rising 1.
2015 is looking to be a magnificent year to be a PS4 owner!