Apple’s About iOS 26 Updates page remains the feature ledger for 26.0 through 26.7, including launch-week 26.0.1 radio/camera fixes on iPhone 17 / Air / 17 Pro, 26.5.1 empty-battery charging on Air and 17, and 26.6.2 cellular update downloads.
PREVIOUS TRAIN
iOS 26 archive: Liquid Glass year and the new floor
DIRECT ANSWER
iOS 26 was the 2025 major train (year-based numbering). It dropped iPhone XS / XR. iOS 26.7 shipped 14 September 2026, the same week as iOS 27. Current compatible phones should treat 27 as the live train.