Add me to the list of recent buyers experiencing this problem. I picked up my car 2 days ago (late April production). I have the 328i luxury line, non-sport, automatic transmission. The steering wheel vibration is quite pronounced/noticeable and a real bummer on an otherwise awesome car that I just shelled out close to $50k to purchase.
It is putting a bit of a damper on my enjoyment of the car since I spend a great deal of my time driving in the speed range where the vibration is most noticeable. I am hoping BMW will recall/fix soon.