Mechanically, the 911 Turbo Cab should be identical to the fixed-roof version, meaning a twin-turbo 3.8-liter flat-six engine will live in the car's rump, putting out something like 520 horsepower. Of course, there's also the hotter Turbo S version of the coupe, and we expect that to get the droptop treatment, as well, with 560 horsepower on tap. The added weight of the folding top and additional structural supports will likely make for slightly slower 0-60 times for both cars, though considering the base Turbo will hit 60 miles per hour in 3.2 seconds, "slower" is a very relative term indeed. All that force will run to the ground via all-wheel drive, managed by Porsche's seven-speed PDK dual-clutch transmission.
The wide stance of the 911 Turbo Coupe carries over to the Cabriolet, no doubt fitted with the same (standard) 20-inch wheels. Inside, the usual luxury amenities will be on hand, along with nearly endless customization options.
Given that the Frankfurt Motor Show isn't too far off in the future, we expect to see the Turbo Cabriolet officially bow before then. For now, check it out in the high-res spy shot gallery above.