That sounds like the way it SHOULD be. I just got a notice that my S will be delievered in the next couple of weeks. I am afraid to even send a "thank you" note for fear it might be misinterpreted!
I walked into a Tesla showroom several months ago, and when I suggested I wanted to change the color on my order, the Tesla guy put his hands up and said, "Don't do that!", suggesting I would be sent to the back of the line. I decide right then and there that 1) I would make no further contact and 2) I love white!