With the debut of the new BMW M3 Sedan and BMW M4 Coupe now only weeks away, we're starting to see more prototypes out in the wild undergoing some final preparations before the big reveal. Earlier this month, our spies spotted several BMW M3 prototypes parked at a test center with less camouflage than previous prototypes.

Now, the 2021 BMW M4 Coupe has started strip teasing. Like the M3 prototypes, some of the camouflage applied to this M4 being put through its paces at the Nurburgring has stripped away, revealing the side profile finished in a blue production color and the car's wider fenders.

The gigantic grille that debuted on the polarizing 2021 BMW 4 series is also now on display, flanked by aggressive air intakes. Unlike the regular 4 Series where the kidney grilles are joined together, the kidney grilles are separated at the middle on the M4. The redesigned headlights and taillights on the regular 4 Series have also carried over to the new M4.

Elsewhere, the front and rear fascias are still camouflaged, but we can still see BMW M's signature quad exhaust system and there's a subtle trunk lid spoiler hiding under the camo. The new M4 also rides on larger wheels than its standard 4 Series sibling.

While the styling is going to be divisive, the new M4's improved performance will please enthusiasts. Powering the 2021 BMW M4 is a 3.0-liter twin-turbo six-cylinder engine producing 510 horsepower in the Competition model and 480 hp in the regular M4. Power will of course be sent to the rear wheels, but the M4 Competition will also be available with AWD after launch.

Owners of the regular M4 will row their own gears with a six-speed manual transmission, while the track-focused M4 Competition will get an eight-speed automatic transmission. Both the new BMW M3 and M4 will make their official debut in mid-September, so the wait for the new generation of BMW's beloved sports cars to arrive is nearly over.