It will depend on where you are and how many other cars are on their way to people near you - they won't send the car transporter out to your dealer with just your car on it basically.
Did I read your original posting correctly that you did not order the model you wanted because of having to wait a couple of months for it? If that is right, and assuming you intend to own the car for a significant period of time, I can only assume that you have less patience than my 8 year old son!
Anyway, good luck and hope it all goes smoothly.