I think this new design looks a bit more muscular than the previous one. That rear rump is reminiscent of the design from the E class coupe, which isn't a bad thing.

Looking forward to seeing the car in person when it comes out.

I think the original concept seems to be lost. It doesnt look like a coupe with 4 doors anymore. Just look at the side view picture, it's not much different than the S- or E-class.