CS = Coupe Sport
Some (blogs) say it's Z9-like SL-rival, some (Scott) say it's X6 Concept, now some think it's F5 RFK.
We will see it tomorrow.

Hint: pay attention to the following lines:
"It is a vehicle that inspires people. It stands for "sheer driving pleasure" in its purest form. And it shows our characteristic BMW interpretation of a Gran Turismo that combines driving pleasure and travel comfort."