The wait for the first of five Game of Thrones spin-offs is going to be a long one. HBO doesn't plan on airing any new GoT-related content until at least a year after the series finale.

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"There are five of them," HBO Programming president Casey Bloys told The Hollywood Reporter. "If we do a pilot and series, nothing is going to air on HBO until at least a year after the final season. We're not doing a final season and then, 'Following it at 11 p.m. … .' I've seen some exciting material. We have really great writers working on these; it's very exciting. But there's no timetable. Not everybody is on the same schedule, so I've seen different versions of different things that are potentially exciting. But there's no timetable about when a decision would be made about any of them."

As the final season of Game of Thrones isn't set to air until 2019, the spin-offs will presumably arrive in 2020 or later. Although Bloys didn't discuss what any of the spin-offs would focus on, writer George R.R. Martin has confirmed that all of the concepts under discussion are prequels, with some not even being set in Westeros.

Game of Thrones' final season is setting up to be of epic proportions. Former star Jason Momoa recently promised it is "going to be the greatest thing that's ever aired on TV. It's going to be unbelievable. It's going to f— up a lot of people."

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The show’s penultimate season is currently available in its entirety on HBO Go and HBO Now. Based on George R.R. Martin’s bestselling fantasy series A Song of Ice and Fire, the hit drama stars Peter Dinklage as Tyrion Lannister, Nikolaj Coster-Waldau as Jaime Lannister, Lena Headey as Cersei Lannister, Emilia Clarke as Daenerys Targaryen and Kit Harington as Jon Snow.