It's been just over a month since the new Porsche 911 GT3 debuted as the "closest connection to 911 race cars of any GT3." But Porsche is wasting no time putting the new hardcore 991 GT3 RS through its paces for its next act. If you thought the new GT3 is as extreme as the 992 Porsche 911 gets, think again.

Our spies have caught Porsche testing a prototype of the new Porsche 911 GT3 RS out on the road as the automaker prepares to replace the outgoing 991 model, and it looks wild. Porsche has tried to camouflage its new track weapon, but it can't hide that gigantic rear wing that looks like it was taken directly from a Porsche 911 race car.

Larger hood vents and a wider body make the GT3 RS look even meaner than its standard GT3 sibling. Additional aero tweaks include new louvers on the front fenders, which are effectively disguised by the camo. There's even camouflage applied to the rear wing supports and endplates. Also expect the new GT3 RS to feature beefier brakes and stiffer suspension.

Whereas the 911 GT3 generates 502 horsepower and 346 lb-ft of torque from a 4.0-liter naturally aspirated flat-six--good for a 0-60 mph time of 3.2 seconds with the dual-clutch transmission--the GT3 RS is expected to have around 540-580 hp to play with.

Like the current 911 GT3 RS, the new model will only be offered with a dual-clutch PDK transmission sending power to the rear wheels. The new GT3, on the other hand, is also available with a seven-speed manual transmission.

Since the new GT3 only premiered last month, we're not expecting the new GT3 RS to arrive until later this year at the earliest. Rumors suggest the launch of the new 911 GT3 RS could be delayed as Porsche is struggling to get the potent engine to pass emissions regulations, so it may not arrive until next year.