I've posted this info a few weeks ago on a different thread, but the gist of it is this. The G80 M3 will enter production early 2020 with select deliveries starting as early as April/May 2020. Summer deliveries are all but guaranteed for the rest of the world. I can not say whether it will be a 2020 or 2021 MY designation, but I am leaning towards a shortened 2020 MY cycle for launch vehicles.
Competition package vehicles will closely follow.
Call it what you may, but you can always refer back to this post at a later date, you know, if you could ever use another good laugh.