TMDb/Avatar: Aang, The Last Ai Movie Avatar: The Last Airbender film canceled in theaters, leaked online. Paramount investigates as release shifts to Paramount+ in 2026. April 17, 2026 AceShowbiz - Avatar: Aang, The Last Airbender has been at the center of controversy following an unexpected online leak and Paramount's decision to cancel its theatrical release. With the film set to debut on Paramount+ in October 2026, the studio is now investigating how the full movie was leaked months ahead of its official premiere.