Just been in touch with BMW Genius:
It looks like my date has been changed it has been put back and they cant tell me why
Original status 27/04/2017: 1100 Scheduled. Production week is 24th of June and estimated delivery is 27th week in July
Status Now 02/05/2017: 1100 Scheduled.Your production week is week 35 in August.And your expected delivery week is week 39 in September.
Have messaged the dealer to find out as they were going to try and bring it forward rather than put me back. see what they say.