Within four hours after Apple began taking orders for the iPhone 5s, Apple Store shipping estimates for new orders of the device slipped to 7-10 days in the U.S. and Canada, following a similar pattern to shipping estimates in other countries where the 5s went on sale earlier today. The original shipping estimate for all 5s models was 1-3 days. Some 28 minutes after they went on sale, all gold iPhone 5s models saw their shipping estimates slip to October. Customers may still be able to purchase launch-day iPhone 5s units by heading to Apple Retail, carrier and select third-party reseller outlets -- but there is no
