There is supposedly a spinoff of Game of Thrones in the works, which would be about Jon Snow and take place after the events of the main series. Will at least one episode of this series be officially released before 2030? To count, it must be a complete episode released as its own standalone thing. For example, it wouldn't count if it was released as a bonus feature on a House of the Dragon box set that was basically, "Here's the first episode of a Jon Snow show that got canceled before the rest of the season was finished."
https://screenrant.com/game-thrones-jon-snow-spinoff-cancelled-why-kit-harington-response/
Game Of Thrones Jon Snow Spinoff Series No Longer In Development At HBO
The actor says the project was previously in the development stage, but "currently, it's not" and "it's off the table" because they "couldn't find the right story to tell." Though it's no longer in active development, Harington hopes they can revisit the project sometime in the future.