Temp vin means partial vin. The order has been pulled for scheduling but hasn't received an exact build week yet. You should know the scheduled build week within about a week.
Unfortunately when people ordered really won't help you figure out when your truck will get scheduled. For example we got allocation for 4 trucks. So our person that's 4th on our list may wait 6 or 8 months til they see their truck. If someone ordered at the same time through another dealer and was 4th on that dealers list of maybe 15 units. They would get their truck much sooner. Ask your dealer where you are in their line of allocation.
Number 12 of 22 at my dealer, I'm hoping it's here by January