Per a document received over on Boy Genius Report, AT&T has reportedly sold out of its iPhone 3G S pre-order stock. A new memo sent along to retail locations provides instructions to tell all customers who pre-order the device on Saturday, June 13th or later that they will have to wait “7-10” days before they can fulfill the pre-order–which will be sometime after the official launch on June 19th: “Only preorders placed [on] Friday, June 12, 2009 or earlier are expected to arrive in time for the 7:00 a.am. opening on Friday, June 19th, 2009. Customers will receive an email notification when their new iPhone 3G S has arrived and is available for pickup.”