Just picked up another BMW X3 at EWR this week. This was a white one with the M Sport package. It HAS a rearview camera and proximity sensors, but no lane change or dynamic cruise or anything like that, again, even though in the dash I can see the outlines of where it should light up.
Interestingly, the one X3 sitting out did not have a camera. I asked if they had more in the back with a camera and she was confused about why the one sitting out didn't have one.