The iPhone Duo, Apple's first foldable iPhone, officially launched today, October 23rd. Pre-order deliveries are currently going out, but the supply is extremely limited. Apple anticipates that all available stock will sell out rapidly. Pre-orders, which began on October 16th, saw shipping estimates for new orders pushed back to January 25th almost immediately, highlighting the device's immense popularity. Apple Stores in select countries will have limited stock for walk-in customers, but others require a pickup reservation. Some U.S. Apple online store listings suggest checking back on October 24th for potential in-store pickup reservations. Stock levels may vary by individual store and region. In the U.S., customers are limited to purchasing two devices per person. The iPhone Duo starts at $1,999 for the 256GB model and comes in Star White and Night Sky. Higher storage options range up to 2TB for $3,199.