If you have iDrive with the MDrive option then you've got control over the M-Servotronic steering and you can select the Sport Plus mode for the power engine response characteristics. BMW Suggest the Sport Plus mode is only available from the Mdrive Menu in iDrive.
Everything else I think you can select just using the Power, EDC and DSC buttons by the gear knob.
One thing though. If you dont choose the Mdrive option, does that mean you dont get the Mdrive button the steering wheel. I wonder what they replace it with ... if anything?