Did you manage to pre-order your iPhone 5? Because right now shipping estimates have already dropped to two weeks–and that occurred just after an hour or so of pre-orders. The original estimes were to have delivery between September 21st (iPhone 5 launch day) to the 25th:
As for the sudden change? This would indicate millions (or gazillions) of pre-orders taking place for the first shipment, as most people were successful on the web, although there were some hiccups. The Apple Store app emerged from this experience as the saviour to many.
Last year, Apple announced 4 million iPhone 4S pre-orders sold over the opening weekend. I wonder what the iPhone 5 numbers will be this time around–probably exceeding last year by a few million?
If you got your order through in the first hour or so, job well done!
Update: Ship times have now dropped to 2-3 weeks.