Seven upcoming fantasy TV adaptations based on popular books

Movieweb highlights seven upcoming fantasy TV adaptations of popular books, including House of the Dragon Season 3, HBO's A Knight of the Seven Kingdoms, HBO Max's Harry Potter series, Netflix/Amazon projects and Starz's Outlander finale. House of the Dragon Season 3 is expected in the summer of 2026 and will introduce James Norton as Ormund Hightower, with the series ending before a planned Season 4.

HBO's A Knight of the Seven Kingdoms is set to premiere a six‑episode first season on Jan. 18, 2026, and centers on Prince Aegon Targaryen (Dexter Sol Ansell) and Ser Duncan the Tall (Peter Claffey). HBO Max's Harry Potter series is expected in 2027, and Channing Dungey told Variety in October 2024 the show will "explore" J.K.

Rowling's books "a little bit more in-depth" than a film; fans are still waiting to learn casting for characters such as Sirius Black and Lord Voldemort. Mike Flanagan has updated fans on his Amazon Prime Video adaptation of Stephen King's The Dark Tower and said the scripts are finished, though questions remain about how the story will be divided across seasons.

Key Topics

Culture, Harry Potter, House Targaryen, Fourth Wing, Outlander