I just got an email from BMW saying the M3 and M4 showrooms are now live.
http://www.bmw.com/com/en/newvehicle...UNxlYYHhlpsOUf
http://www.bmw.com/com/en/newvehicle...UNxlYYHhlpsOUf
On another note they must be launching the US configurator very soon as this showroom deep links to it.