Apple has once again updated its U.S. Online Store to reflect improved shipment wait times for the iPhone 4. According to the store’s iPhone page, new iPhone 4 units—both the 16GB and 32GB models—now ship “within 24 hours,” down from the previous estimate of 1-3 days. Apple first reduced the estimated wait time on new online iPhone 4 orders in the U.S. from three weeks to 5-7 days in early October, dropping it again in…
