From the recent posts, it looks like teko and rugar760 both have EDDs that start on January 17th and 18th. Also if I'm correct, it looks like you both ordered the long range Model S. If those dates hold true then hopefully we will see the first 2024 VINs assigned soon.
As for the Plaids, I don’t think that they plan on making any this month. Even though the estimate on Tesla's website for brand new Plaid orders says "Est. Delivery: Jan – Feb 2024" I don't think that is true. I've had a Plaid order since Dec 2nd with no VIN assignment and no holds placed. I also accepted the updated configuration right after the email from Tesla came out and my EDD is still Feb 1 through Mar 14.
I hope I'm wrong but these inconsistencies lead me to think that we won't see Plaids until February at the earliest especially with many EDDs going into March.
I guess we will see.