TMDb/House of the Dragon TV House of the Dragon Season 3: New cast joins the Targaryen saga. Explore fresh faces, character fates, and the expanding war for the Iron Throne. March 23, 2026 AceShowbiz - The highly anticipated third season of House of the Dragon is approaching its premiere, bringing with it fresh casting choices that have ignited discussions among fans regarding the timeline and character developments, particularly involving the Targaryen family.