tvOS 18 is the tenth release of tvOS, shipped September 16, 2024. InSight led — pause-free onscreen identification of actors, characters, and songs in Apple TV+ content, Apple's answer to Amazon's X-Ray — with machine-learning Enhance Dialogue extending to more devices and speakers, subtitles auto-appearing when muted or skipping back, and 21:9 projector support acknowledging the home-cinema crowd.

InSight; ML Enhance Dialogue; smart subtitle behavior; 21:9 and ultra-wide projector output; new aerial categories; Fitness+ and Music refinements; and the home-screen's continued Up Next centering.

InSight completed the TV+ viewing experience's parity with rivals and the dialogue/subtitle intelligence quietly addressed streaming's most universal complaint: nobody can hear anything anymore. The last sequential number before tvOS 26.