On the delivery time I am told the timing is dependent on the production dates, i.e. if your order is close to a production time your car will not take long. I would imagine if you get an allotment for the March production your car will arrive about the same time. The M's are not in production all of the time like a 3 Series.
I am not aware of any LCI changes to date nor have I seen any photos, I am hoping they are all positive and relatively minor......not keen on buying sight unseen, but HP/TQ upgrades are welcome!
Any updates are appreciated!