Elon is too busy playing with rocket science….FWIW, just checked on my 7 month old order. Calling my local SA number, it was forwarded to the Las Vegas team. They claim to have no knowledge of any 19" wheel issues. That's really hard to believe, if we have so many people calling to change their orders from 21 to 19. They also claimed to have no way to see where I was in the queue with a Dec 2020 order.
Tesla really needs to figure out a better communications plan on all this. This isn't rocket science, some companies do it quite well.