Although the current GT-R is one of the fastest and sportiest cars on the market, Nissan still wants to improve its supercar’s performance. That’s why the Japanese manufacturer announced the introduction of an all new 2013 GT-R version, upgraded with a more responsive engine and a more dynamic suspension.
Applying lessons learned from this year’s Nürburgring 24-Hour race to the roadgoing GT-R, engineers have improved response in both the mid- and upper-rpm rev ranges, increased body rigidity and made changes to the dampers, springs and front anti-roll bar.
In the engine compartment, Nissan installed new high-output injectors and a more concisely control fuel injection to improve mid-range and high-rpm response.  The 3.8 liter V6 engine keeps the same amount of power, delivering 550 hp.
After measuring the roll centre of the GT-R when cornering, engineers have updated the suspension set-up with revisions to the dampers, springs and front anti-roll bar to lower the centre of gravity.
On the interior, reinforcements have been added to the dash panel bar and instrument panel member resulting in increased body rigidity and better suspension control.
The revised Nissan GT-R will go on sale next spring.

Source: Nissan