Pre-orders for the iPhone Duo opened at 8 A.M. Eastern and initial stock sold out within moments, pushing all shipping dates to November 16 and then November 23. Apple has not disclosed how many units were prepared for day one, but the rapid movement of shipping windows typically signals strong demand. However, the situation is complicated by reports that Apple manufactured fewer iPhone Duo units than usual. Analysts attribute the reduced inventory to manufacturing delays associated with the device's complex design, though the novelty of the new form factor may have also made demand estimates difficult. The interplay between constrained supply and early buyer interest makes it unclear how much of the sellout reflects pure demand versus limited availability.