After slipping to “2-3 weeks” for preorder customers, just two days after the launch of the iPhone 5 last week, readers informed us Apple’s website now lists the device as available to ship in “3-4 weeks” in at least the United States, Australia and Canada. Many other countries are still listed at “2-3 weeks.” Either way, initial shipments will not arrive until long after Apple launches the device in another 22 countries at the end of the month. Most carriers are still advertising availability for Sept. 21, but all three iPhone 5 models on all carriers are listed as available in “3-4 weeks” for the countries mentioned above.