Ok, I'm first in line if the price is right and they ship to the USA, SO BACK OFF, but I found this online today:
http://www.simota.com/productsinfo.php?ID=368
Looks like Simota IS making a carbon fiber CAI for the Z4M!!!
There is even a picture of one installed and listed.
Item CF610-32
I already emailed "sales" to see what the status is and I am waiting for a response.
crossing my fingers for an alternative to the aFe and Gruppe M, hopefully a nice middle ground on price, quality and sound!!!!
(if it becomes a reality)