Another GoT spin-off is coming out in late 2025.
https://tvline.com/news/game-of-thrones-knight-of-the-seven-kingdoms-season-1-release-date-hbo-max-1235172818/
The prequel was formally announced in April 2023. The series will be written and executive-produced by Martin and Ira Parker. Ryan Condal, who currently serves as House of the Dragon‘s showrunner, and Vince Gerardis also will be EPs.
“A century before the events of Game of Thrones, two unlikely heroes wandered Westeros,” the previously released official logline reads. “A young, naive but courageous knight, Ser Duncan the Tall” (aka Dunk) “and his diminutive squire, Egg. Set in an age when the Targaryen line still holds the Iron Throne and the memory of the last dragon has not yet passed from living memory, great destinies, powerful foes and dangerous exploits all await these improbable and incomparable friends.