For all of you saying that you do not care what the new M3 will sound like:
I'm sorry, but for the vast majority of car enthusiasts, sound plays an integral role in overall driving experience. Not all of us live next to race tracks or completely empty roads, so for us, that acoustic symphony is part of what makes a performance car enjoyable on a daily basis. I still get a little tingle in my spine when I get this V8 over 4-5,000 rpm at full throttle.
If the next M3 fails to deliver on the acoustic side, I will be majorly disappointed, and will certainly give competitors a much closer look.