Apple started the pre-order for the iPad Mini and iPad 4 26 October 3AM Eastern / 12AM Pacific. 17 minutes later, ship dates for the white iPad mini slipped to 2 weeks from the original “Delivers 11/2”, whille the black Wi-Fi iPad mini remains available for delivery by November 2nd. This can have two reasons, Apple’s iPad Mini low supply or a the high demand.
It is most likely that Apple’s stocks may have been low because some countries outside the U.S. listed “2 week” delivery times from the first moment the white iPad minis went on sale.
If you don’t want to pre-order, the Wi-Fi iPad mini will be available in retail stores starting on November 2nd and the cellular version is promised by mid-November.