Also got my VIN this morning, SR+ Blue/Black ordered 14th October.
No "J" in my VIN that previous commenters have said indicates the new battery (or motor?) or is that no longer what we're thinking?
Either way, I was happy with the stats when I ordered and this is part of buying a Tesla it seems. There will also be pros and cons any variant and I can't wait to get mine.
To me it would make sense the big jump in the delivery timeline on the SR+ soon after I ordered from Nov/Dec to Feb 2022 is related to the new battery rollout but that's pure speculation and if CS is saying different