We received our email yesterday around 2:30PM. This was curious timing. About an hour earlier I went to my Tesla on the website and checked the box for the early configurations for about the sixth time since this was available to us. After I checked our preference, the page showed a different wording--like "Your preference is saved." We have never seen this indicator before. I still received the same "November - January" status.
Coincidence? Or perhaps Tesla has a number of vehicles that have been manufactured awaiting sale and delivery arrangements, and they released a number of invitations as a Christmas present.
By the way, we received two emails about 5 minutes apart, yet we only ordered one vehicle.
We reserved online before the reveal, and we own a Model S, and we live about 150 miles from Fremont.