HBO has announced the final season of "Game of Thrones" will launch this April.

The news was revealed in a promotional video released by HBO on Tuesday, which teased that all of the conflict fans have seen in the show thus far has all been building to this final confrontation with the White Walkers.

And although the flagship series is ending, HBO has multiple projects set in the "Game of Thrones" universe currently in development. The premium cable channel has already ordered the project written by Jane Goldman to pilot.

Goldman's show takes place thousands of years before the events of "Game of Thrones" and chronicles the world's descent from the golden Age of Heroes into its darkest hour. And only one thing is for sure: from the horrifying secrets of Westeros' history to the true origin of the white walkers, the mysteries of the East to the Starks of legend — it's not the story we think we know.

The Goldman pilot has begun casting, with Naomi Watts recently cast in a lead role along with "Poldark" actor Josh Whitehouse.