House of the Dragon, the prequel to epic fantasy TV series Game of Thrones, is due to start filming in April according to HBO chief content officer Casey Bloys.
This highly anticipated spin-off will focus on the downfall of the dragon-riders from House Targaryen.
Speaking to TVLine, Bloys said: "They're prepping. They start shooting in April."
He added that showrunners Miguel Sapochnik and Ryan J. Condal "have been writing for a long time" and have drafts of all 10 Season 1 episodes "in various stages."
While he didn't give much insight as to what GOT fans can expect he did say "that everybody is aware that the original is a great show and did what it's going to do, and you want to honour that."
"But you also want to tell different kinds of stories. So it will definitely be in the Game of Thrones universe but hopefully will feel like something that only Ryan and Miguel could do."
House of the Dragon will be set 300 years before GOT and will follow Daenerys' ancestors as House Targaryen began its historic downfall.
GOT author George R.R. Martin and Condal created the prequel while Sapochnik served as a director on some of GOT's biggest episodes.
Bloys also said that House of the Dragon is due for release in 2022.