I am running it now, and l get email & SMS on my iDrive, can view while stationery or play while driving.
The first thing to happen is you have to update your Blutooth firmware in your CIC, you can download it from BMW here, put it on a USB Stick formated with Fat32, use the USB socket in centre consol, select update in iDrive.
Then you have to load IOS 6 Beta 2 into your iPhone.
Last, it only works with iPhone 4S, iPhone 4 does not support MAP.
X5 M50d White, 20"rims, Adaptive Drive, HUD, Xenon Adapt Lights, Rear/Side Camera, Sunroof, Auto Tailgate, Comfort Access, Active Perforated Ventilated Comfort Seats, M Paddle Shift, Active Crus, Stop/Go, Proff Nav + TV, DAB, 16 Spk Ind HiFi, USB, Internet, Apps, 4 Zone Air, Towbar 20% Tint, 5mm Castor Bushes, Yellow Calipers, Ceramic Pads