Rep at the Scottsdale AZ showroom said they were told that they would get a showroom X in January. They have not dispensed much information about the X when prodded, I so I will take the January remark with a grain of salt. Hope it happens, but my expectations are low.
I am in the same boat as you are Jack_L. A 5 seater and X90D. So, I am going to have to wait as well. I have been waiting over three years for this car. I never looked back after putting a deposit down. I wanted to configure/confirm ASAP in case it helps me get the car sooner. I needed a new car 2 years ago. My brother has a 2012 model S and still loves it. He raves about Tesla service center out in southern Ca. We love our 2015 model S and I believe the model X will be everything I was hoping for!You are braver than I am! Also, I don't think I will be getting the performance model (and likely getting the 5 seater) so I'm already at a 6+/- month wait anyway.
How long does it take to get an answer on an email? Sent one two days ago to the email address in the invite to configure E-mail. No response yet. I know they are very busy. Just curious to their average response time. I know I can always call too.