FWIW I've had the same 4 week range (december 3-31) for a long while now. What was unusual to me is that I was one of the very few (at least at that time) that had a 4 week range versus a more typical 3 week range. that tells me (right or wrong) that i was soft "slotted" for production say, 3 weeks before in November - so again, that tells me that Tesla planned on blue/whites roughly the first or second week of november and I was pointed in that general direction.
My working theory is that when you're down to 3 weeks it's more serious, and then 2 you've actually been soft matched to a car.
I fully expect to see february or march at some point, possibly even april, as it SEEMS to me that is a place holder right before a VIN gets assigned.
i think also with shortages, it's not impossible that it really will slip into next quarter or later.
I want a 2022, and i'll be away x-mas week, so although i'm checking 27.5 times a day, i won't pull the trigger until it's what i want.
i'm also hearing you can remove FSD and not get dinged, though i'm nervous. i also have FOMO, but a lot of folks are telling me it's not worth it, and some are saying it is.
the betas seem to be improving, so there is that, and as long as i don't sell to tesla, it should transfer to the next guy. not sure the delta will be $10k when i sell, but maybe "something" - ditto if i get a decent deal on PPF