Haha, manufacturing plant...yeah that's associated and still 4 links down the chain of the Webstore-> OMS -> ERP -> Logistics -> Plant, so you're still not really there. But that's fine.
Your* long rambling really doesn't say much. As I clearly stated, anything before your confirmation email isn't confirmed, and not tied to inventory. As I bolded you admit your email said 10/7, so that's what it is. All dates on the site are just the webstore giving you info in snapshots it gets from the OMS. You are trying to hold that as firm delivery date, but it's not, it's estimated. If you call they will tell you that, and I will as well since that holds nearly universally true in the space.
Why some people are shipping after you is anyone's guess. Verizon did take the entire preorder system down for a short time to fix some bugs (notably the Loyalty one that hit many) so what orders were in the feed que during that time and how they were processed on resume will forever be up to speculation.
Some time soon, everyone will have their phones....and let's remember perspective, it's just a phone.