I just ordered my 320i, delivery due end of August. I asked my dealer (in Luxembourg) about the new satnav and here is the reply I received:
"in accordance with the BMW productmanagement the navigationsoftware is preview for November this year.
Your 320i is preview for end of august."
What I understand from this is that the update will be available for the cars with November delivery and onward. I really hope she's wrong, though..
It's ready, but I'm not there yet: Mineral grey 320i Luxury. Sport auto, sensatec venetobeige, professional satnav, servotronic, PDC, cruise control, xenon headlights, headlight wash, rain sensor with auto headlight.