I just called Gamestop to verify my order and that there will be no problems with them shipping it out, and am I glad I did. They had my order all set, but the agent I spoke with said that there was a problem anyway. Back when I placed the order, I knew that my credit card was going to be expiring between that date and now, so I couldn't very well place an order on it that wouldn't be paid for until after the card had expired and I couldn't very well wait until September to place the order or I'd never have a shot at the Inquisitor's Edition, so I selected PayPal as my payment method. And of course that would have been a problem now if I hadn't called today. I would have still received the game, probably, but not until at least a week or possibly longer after the 18th, depending on how long it took for processing to take place, before and after the 3 day wait for confirmation of funds. Since I called today, the agent was able to change my payment method to my credit card instead, and I will now have it delivered on the 18th, as scheduled. By the way, anyone who ordered the game to be physically shipped to them, the only way you will receive it on the 18th is if you paid extra for overnight delivery because they are not shipping them out until the 17th.
So, for anyone else out there who selected PayPal for their method of payment, you have two options. You can either call to switch it to a credit card or you can go to a GameStop locally, buy a gift card for an amount greater than the price of whichever edition of the game you ordered and then call them to transfer payment to that gift card. Otherwise, they can't guarantee a delivery date.