@RJ215 Ask your SA to tell you the build date. They can do this very easily, even by text, and that's the only way to know when the car was made. There is no date printed anywhere on the car or documentation.
It's very unusual for Tesla to make January deliveries in the US but ideally your car was built last week and has a good chance of having some of the recent updates rather than being a holdover from December.
Check the software menu for Ryzen/Atom and also the edges of the rear windows to see if they are double-pane like the fronts. Also check if there's any indication of a mid-car airbag in the *right* side of the driver's seat. Not sure when those will arrive but hopefully sometime around now.