A prototype of the 2013 Nissan GT-R is set to be unveiled at this week's 2012 Sydney motor show, introducing minor upgrades to create an even more refined package.

Since its launch the Nissan GT-R has seen incremental improvements on each model-year update with increases in power and torque, better acceleration times and enhanced suspension and gearbox tuning.

The 2013 model is no exception to the rule. This time around the Japanese company has further tuned the engine and suspension and added additional interior features. What these features are and what the interior gains will remain a mystery until the car is unveiled at the motor show on Thursday.

There’s currently no word on whether or not the GT-R’s 3.8-litre twin-turbo V6 has gained any additional power on top of its 404kW and 628Nm of torque. The production model will be officially unveiled in Japan come November.

The 2012 Nissan GT-R can accelerate from 0-100km/h in just under three seconds and we suspect the forces of physics may have prevented Nissan from improving that figure further. In saying that, we had the exact same feeling before the last two updates and have been proven wrong on both occasions.

Details are scarce and Nissan Australia made no mention of the GT-R at today’s unveiling of the new Nissan Patrol, Nissan Pulsar and Nissan Pulsar SSS. Check back Thursday for more details.

Read CarAdvice's review of the Nissan GT-R.

Note: Images are of the 2012 Nissan GT-R.