Apple announced its first foldable iPhone, the iPhone Duo, at the September 9, 2026 “Surprise and Shine” event under new CEO John Ternus. The book-style device features a 5.4-inch outer display and 7.6-inch inner screen, A20 Pro chip, titanium build, and starts at $1,999. Pre-orders open October 16 with broad availability October 23, 2026, alongside iPhone 18 Pro models. This late but premium entry targets productivity use cases and aims to capture significant share in a niche long dominated by Samsung and Huawei. The confirmed timeline and imminent shipping window serve as the dominant catalyst for market-implied odds on any near-term release question, though supply constraints or last-minute adjustments remain theoretical risks.