Kingsman co-writer Jane Goldman has penned the HBO pilot, co-creating the project with George himself, whose book series is called A Song Of Ice And Fire. We don't know her name, but according to the outlet, she will be "a charismatic socialite hiding a dark secret".
Besides the fan enthusiasm already attached to the series, it could eventually prove financially lucrative for the Sydney-raised star if it's as popular as its predecessor, with Game of Thrones' key cast commanding salaries and bonuses above $3.5 million per episode. She's now signed on to play Gretchen Carlson in a Showtime limited series about Roger Ailes, and most recently appeared in the revival of Twin Peaks.
Watts is known for her roles in Mulholland Drive, The Ring, and King Kong.
In fact, the series description hints that we'll actually be diving deeper into several of the mysteries Game of Thrones has never fully explained: "It chronicles the world's descent from the golden Age of Heroes into its darkest hour". James Farrell and Jim Danger Gray (Hannibal) are also executive producers.
Just because this series is set millennia before Game of Thrones, that doesn't mean we won't be getting our fair share of Westerosi history.
No official word on when the Game of Thrones prequel might debut on HBO, but sometime in 2020 seems the surest bet. Chris Symes (The Alienist) will serve as a co-executive producer. It turns out people didn't want to watch a series where the South won the Civil War and slavery remained legal, who knew?
Watts recently played Queen Gertrude in the Hamlet-based film Ophelia, with Star Wars' Daisy Ridley playing Ophelia.