Dispite what some people are saying,
BMW's order books for F20/F21 is fat.
Because of this, there are delays with production due to the demand of some components. EG I am informed that the 'sport' auto with paddles was to only take up around 15% of the auto sales, however it currently exceeded 45% of all autos ordered.
Like most of us, you also will have to wait to get your 1er.
The good news is that you will love it when you finally get to drive it