All I can say is BMW had better not f**k this up. The enthusiasts they would lose will never return. I'm glad I bought an E9x M3 when I did.
My opinion is this gonna be some bored and/or stroked out N54. Not called an N54 of course and of course turbocharged. I'm almost positive it will be 3.5 litres because it's a legendary number and has cache' with us from the M1 and first M5.
"what I'm driving here...is an ending." Jeremy Clarkson
2010 Carrara White Porsche Cayman 6mt
2014 Whiteout Toyota GT-86 6mt(Sold 05/23/15)
2011 Alpine White BMW M3 6mt ZCP Coupe(forced retirement 06/06/14)
2008 Alpine White BMW 328i 6mt Coupe(retired 06/21/11)