I just got off the phone with an employee from a local Walmart, and she was more than generous to provide with me a few bits of info regarding this next Thursday, June 24th. So, for anyone that doesn't have a pre-order, listen up. They will start selling the iPhone around 8AM - 9AM. Unlike the pre-ordering process, they will take any form of payment. So, get to your Walmart early and look forward to iPhone 4! Above quote courtesy of kappsdev.