Apple announced its first foldable iPhone, the iPhone Duo, on September 9, 2026, confirming a book-style design with a 5.4-inch cover display and 7.6-inch inner screen that supports ProMotion and Apple Pencil. Preorders begin October 16 and sales start October 23 at a $1,999 starting price, aligning with fall 2026 timelines amid competition from Samsung’s Galaxy Z Fold 8 and Google Pixel foldables. Supply-chain reports and retail demo plans indicate strong execution, with iOS 27 features optimized for larger screens. Traders tracking resolution criteria now focus on whether any last-minute supply constraints or quality issues could shift the exact availability window.