This is a 2015 GT-R Premium edition. Look at the wheels, front bumper and rear diffuser, all post MY2011 GT-R's have side vents on the rear diffuser for better brake cooling and the face-lifted front bumper with embedded DRL's. Also, the headlights and tail lights have been revised for the 2015 model year.
The Nismo GT-R on the other hand is a totally different GT-R.