Last year, the BMW M2 Competition broke cover with more aggressive styling, sharper handling, and a substantial power increase from 365 hp to 405 hp. Don't think, however, that this is the ultimate M2, because a new hardcore CS version of the sports coupe is coming with less weight and even more power.

We got our first look at the BMW M2 CS being put through its paces at the Nurburgring last October. Now, a new prototype has been caught undergoing some cold weather testing in Sweden.

Compared to the white version we saw last year, this updated prototype is painted blue according to our spy photographers but wrapped in black foil to conceal its new performance parts. The lower parts of the front spoiler look more production-ready than the one on last year's prototype, as does the rear trunk spoiler.

Expect the M2 CS to have a more aerodynamic body than the Competition version, as well as carbon fiber brakes and a carbon fiber roof to reduce weight. The hood also appears more sculpted to give the car a more aggressive look, complemented with a rear diffuser at the back. It will also reportedly ride on 19-inch forged Y-Spoke 763 M wheels.

Technical details remain unknown but expect the M2 CS to pack more power than the Competition model, as we already know that more performance can be extracted. The M2 Competition is powered by the same S55 engine as the M4 detuned to deliver 405 horsepower and 406 lb-ft of torque, while the standard M4 has 425 hp and 406 lb-ft of torque. Production will also likely be limited when the M2 CS allegedly launches in 2020.

Hopefully, we'll see BMW's latest lightweight masterpiece break cover later this year, possibly at the 2019 Frankfurt Auto Show this September.