Reservation 12/2017. Ordered 6/29/2018. Red AWD, Black interior, EAP. My current delivery estimate is Sept-Nov. Using the Edit Design link, I started to switch from the 19" to the 18" wheels (now that I've seen the wheel cap kit). But I was scared off by the potential for getting a new estimate ("Delivery in ~2-4 months" is the message that I see prior to confirming the change). I know that in practice, this shouldn't make much difference. But has anyone actually made this change and gotten their estimate pushed back? I definitely don't want to miss the end-of-the-year delivery.