It looks like BMW is working on yet another limited edition model that will be slotted just under the M4 GTS. While out shooting spy pictures of the 2018 BMW M4 LCI this white prototype was captured. The front and rear camouflage is hiding some some unique looking body parts.
BMW M4 GTS - Special edition M4 available for the first time in the US
Up front there is a lip at the spoiler and we also see the more sculptured engine hood with a GTS style air outlet. The wheels are 19" up front and 20" at the back and we also see a bigger rear spoiler hiding under that camo.
These details all indicate that this M4 is not just a M4 facelift but an new model of its own and maybe that model will be called the M4 CS? Rumors of BMW re-launching the CS branding are already swirling around the 2018 M2. The main question is if it will have the standard M4 power or will it go up to the M4 GTS's power of 500 hp? Perhaps it will it be something in-between?
One thing is sure, if the M3 CS is limited just like the GTS you better hurry to your BMW dealer and sign up for one as quick as you can.