Only hours after Apple sold through its initial allotment of iPhone 4 units, pushing the ship date on new pre-orders back from the device’s June 24 launch date to July 2, the company has been forced to push new pre-orders back even further. According to the company’s online store, new iPhone 4 pre-orders will now ship by July 14, nearly two weeks later than orders placed just earlier today. Apple announced earlier that it and its carrier…