Apple announced its first foldable iPhone, the iPhone Duo (also referred to as iPhone Ultra in leaks), at the September 2026 “Surprise and Shine” event alongside the iPhone 18 Pro models. The book-style device features a 5.4-inch outer display and 7.6-inch inner screen with a refined hinge, minimal crease, and premium titanium construction, positioning it as a high-end competitor to Samsung’s Galaxy Z Fold series. Preorders begin October 16 with availability on October 23, confirming the long-rumored 2026 launch timeline after years of development. Recent supply-chain reports note potential production constraints at Foxconn that could limit initial volumes, while ongoing leaks highlight advanced display and battery specs. Traders should monitor any last-minute delays tied to manufacturing yields or regulatory certifications ahead of the October release window.