Your timing is about same as mine. You probably will get a heat pump, and you're likely paying 2023 pricing for MY2023 so no $1500 credit. Also no credit for home install. My dealer gave me an updated purchase order with new pricing and VIN when the build started, strange that you didn't get that....
According to this post vin is only available to the dealer once vehicle is built
Market conditions and Q4 eTron future pricing
"Edit: I just called my dealership and was told my vehicle was picked up by the factory for building soon. When that happens, the MSRP ($67k) is locked in (in my case, it was locked in January 25th). So, I am immune to any further price increases. Whew!" Can u ask them what official point that...