It's my understanding that it's now standard in the US spec M3. I am quite surprised it's on mine especially when my 2008 328i coupe did not have it. Nor was it an option.
"what I'm driving here...is an ending." Jeremy Clarkson
2011 Alpine White BMW M3 6mt ZCP Coupe (reluctantly sold 06/06/14)
2008 Alpine White BMW 328i 6mt Coupe (retired 06/21/11)