1. First car or 2. I don't know where this May 6'th date came from but there's no way they can coordinate to have all the cars show up on the same day.
2. Pricing is available for dealers on
https://www.gmpricing.com/
3. Discounted pricing is up to the dealer. They don't have to accept it if they don't want to. GM has stated that all discounts will be available from their end from day 1
4. They are building V8s along side v6s. But, the first month or so of v6s will be dedicated to the "one car per dealer" program and not customer sold orders. Order of build is rather complicated. Ask your dealer to look up their target production week for their first sold order(s). It's available in dealer world.
5. yes