As Watchers On The Wall notes, this piece of information aligns perfectly with what fans already know about the Game of Thrones season 8 production schedule.
Game of Thrones season 8 does not have an official premiere date yet.
Iain Glen has explained why Game of Thrones season 8 will take so long to shoot.
In the meantime, to keep you occupied, HBO has released an animated video exploring the history of Westeros.