Talked to BMW dealer today and heres what I found.
You CAN get the parking camera option retro fitted as an accesory option.
However, due to the 7 hours!!! that it'll take their service guys to install it negates any value in having the feature!
It requires a camera plus a fiber optic cable from the back tailgate to the existing monitor in the dash.
Personally, I'd rather do the work myself but cant get my hands on the parts!