So rang Tesla. After waiting 1/2 hour got cut off (thanks Tesla), rang back and requested a call back which came after about 15 minutes. She said my EDD is Jan 23 - Mar 23 but they may be able to assign a VIN for December (not sure if this is just fobbing me off). One interesting bit of news is that she told me they are trying to get the delivery times down to 6 - 8 weeks (I couldn't help but point out rather sarcastically that they currently cannot hit 6 - 8 months, so that is going to be on hell of an ask. Anyway the news that is interesting is that she told me they will be delivering cars in January 23 to try and get the backlog down and this is not something they have done before (as we know).