Porsche isn't even finished with new variants of the current 991-generation 911 but the automaker is already deep into development of new variants for the car's successor, the 992.

The latest spy shots and video show an early tester for the new 911 GT3. There's also a new 911 Turbo in the works.

We know this latest prototype is for the GT3 because of signature elements like the dual exhaust tips mounted at the center of the rear fascia, plus the center-lock wheels and huge carbon-ceramic brake rotors. The prototype also features the 992 generation's sexy wide body.

We can also see that the front fascia sports larger intakes to those on the entry-level Carrera. And at the rear is an oversized rear wing that should feature a more refined design on later prototypes.

The current GT3 makes do with a 4.0-liter flat-6 that delivers 500 horsepower and 339 pound-feet of torque and willingly revs to a heady 9,000-rpm redline, and we expect a similar setup to carry over to the new model.

While there have been rumors that Porsche may switch to turbocharged power to boost performance of the track-focused 911 variant, the video above showing a prototype testing at the Nürburgring suggests a naturally aspirated engine will remain.

2021 Porsche 911 GT3 spy shots - Image via S. Baldauf/SB-Medien

2021 Porsche 911 GT3 spy shots - Image via S. Baldauf/SB-Medien

The sole transmission should be a 7-speed dual-clutch unit, though Porsche may appease manual fans by making a stick shift available at some point in something like the current GT3's available Touring option, which features a six-speed manual.

Also available at some point will be a new GT3 Cup racing variant and more hardcore GT3 RS.

The GT3 should make an appearance in early 2020 before arriving in showrooms later that year as a 2021 model.