Earlier this month a video (posted below) was released that certainly made a strong case for it. The clip showed the new 2012 Nissan GT-R undergoing acceleration tests with the car’s chief engineer, Kazutoshi Mizuno, overseeing the process.
As we know, the facelifted GT-R sports a more powerful 523 horsepower and 451 pound-feet of torque version of the car's twin-turbocharged V-6, as well as a more aerodynamic body and updated launch control system--all of which should result in quicker acceleration times.

2012 Nissan GT-R acceleration times
Now, Nissan has backed up the video with an official claim that the GT-R’s 0-100km/h time is a flat 3.0 seconds. The result was clocked during a media event at the Sendai Hi-land Race Way in Japan a couple of weeks ago.
Two separate runs were made in a stock standard 2012 Nissan GT-R, once at an outside temperature of 58.82°F and the other at 65.48°F. Both returned the exact same 3.0 seconds figure.
[Nissan]