Porsche has only just launched the new GT3 based on the 992-generation 911, but the more hardcore GT3 RS variant is now in the final stage of testing ahead of a scheduled debut on August 17.

A prototype has been spotted again at the Nürburgring and on some of the German racetrack's surrounding roads, and it's devoid of all camouflage gear seen on previous testers.

Compared to the GT3, the tester for the GT3 RS sports additional vents on the hood and front fenders which look to contain some active elements. There's also a more aggressive front splitter, new side skirts, and a massive, dual-element rear wing with swan-neck struts. The wing also has an active element.

The GT3 RS prototype also wears Michelin Pilot Sport Cup 2 tires measuring 275/35R20 up front and a massive 335/30R21 at the rear. Huge carbon-ceramic brake rotors can also be seen housed within the center-lock wheels.

You can also clearly see the car's side intakes which are a typical feature of the GT3 RS (and Turbo), but not the GT3.

Power will come from a flat-6 mated as standard to a dual-clutch transmission. Peak output in the previous GT3 RS was 520 hp and 346 lb-ft of torque from the same type of engine, and we can expect a slight uptick for the new generation. It's possible the engine is a version of the new 4.2-liter flat-6 powering the recently revealed 911 GT3 R race car. The engine delivers 565 hp in the race car.

2023 Porsche 911 GT3 R race car

2023 Porsche 911 GT3 R race car

While the GT3 is closely related to Porsche's 911 GT3 Cup race car, the GT3 RS takes after the more extreme 911 GT3 R racer. The race car's development was closely associated with this new GT3 RS. Recall, Porsche's GT3 and GT3 RS are built alongside their motorsport siblings.

One element from racing unique to the GT3 and thus also likely on this GT3 RS is a double-wishbone front suspension that's stiffer and more stable with less body movements under braking compared to the MacPherson strut used in other 911 variants.

Stay tuned for the reveal in a couple of weeks.