Chevrolet has teased a new Corvette ZR1.

Not much about the ZR1 is known, other than the automaker saying on April 10 a reveal is coming this summer, with a caption that states: “The unthinkable is on the horizon: Corvette ZR1.”

For a bit of background, the Corvette is Chevrolet’s hyper sports car. The current iteration is a mid-engine, rear-wheel-drive car.

In base trim, the car has 495 hp and can accelerate from zero to 60 mph in 2.9 seconds.

Typically, the Corvette has a base model, in the current generation it’s called the Stingray, plus a higher performance variant called the Z06.

Occasionally, Chevrolet releases a ZR1 variant, which has even more performance prowess than the Z06. In case you are wondering, the current Z06 has 670 hp.

We’ll have to wait and see what Chevrolet comes up with for the ZR1 version.