everybody is concerned about the extrerior changes, but knowing that during the complete lifecycle of a model (including facelifts) more than 2000 parts are changed , I am more interested what changes are done under the hood and in the interior.
Exterior wise: logic they will offer LED lights; However changes will be minor.
And related to the M5 , it will even be less than minor; Remember the face lift of the E90 series .. the m3 wasn't affected ..
And even so .. our M5's still are great cars!!!!