Just got news from BMW China and it says there's a new M4 model gonna show up in Shanghai automobile show. It looks like it comes with the 763M wheels, GTS front lips and OLED taillight. I tried to upload some screenshot but the form tool doesn't allow me to do that.
Here is the article's link:
http://mp.weixin.qq.com/s/9_E_hh5bWCp7v4tChqw8gw