Earlier in the year Nissan finally announced motorsport and engineering firm Nismo as its official performance partner.

At the time, Nissan also confirmed the launch of its fastest GT-R yet, a new Nismo-enhanced model that would hit the market sometime in 2014.

Few details were provided, although Nissan did state that its GT-R Nismo model would draw on lessons learned from racing the GT-R in various motorsport categories around the world, and that it would also deliver more power than the standard model.

Now Autocar has managed to come away with a few more details after speaking with Nissan executive vice president Andy Palmer.

Palmer revealed that Nissan had begun testing prototypes for the car and that a world debut was scheduled for November’s 2013 Tokyo Motor Show, meaning we’re likely to see it in showrooms as a 2015 model.

He also boasted that the GT-R Nismo was expected to lower the Nürburgring production car lap record. The current record stands at 6:48, set by a barely road-legal Radical SR8 LM, though Palmer is likely referring to the 7:12:13 set by the Dodge Viper ACR in 2010.

The key will be motorsport know-how taken from Nissan's Nismo race team, particularly in the area of aerodynamics. Pictured above is Nissan’s GT-R Nismo GT-3 endurance racer, which is expected to influence the design.

"The majority of the exterior changes are aero and downforce related," Palmer said. "The production car record at the Nurburgring is the gold standard, and we expect to lower that."

The current 2014 Nissan GT-R delivers 545 horsepower and 463 pound-feet of torque, and will lap the Nürburgring in 7:18.6.

With prototypes for the new 2015 Nissan GT-R Nismo already testing, we should have the first spy shots very soon.