HBO sets its eyes on an August release date for its “Game of Thrones” prequel.

The studio announced the news on Tuesday with the image of a dragon egg on Twitter.

“August 21. #HouseoftheDragon” they wrote.

READ MORE: George R.R. Martin Is ‘Loving’ New ‘Game Of Thrones’ Spin-Off Series ‘House Of The Dragon’

“House of the Dragons” takes place 200 years before the events of “Game of Thrones”. It follows the ruling Targaryen family and showcases the events leading up to the devastating civil war Dance of the Dragons that broke out in the family over succession to the Iron Throne. It’s based off the events of George R. R. Martin’s 2018 book Fire & Blood.

The 10-episode series stars Emma D’Arcy, Olivia Cooke, Matt Smith, Paddy Considine, Rhys Ifans, Steve Toussaint, Sonoya Mizuno, Fabien Frankel, Eve Best, and others.

READ MORE: ‘House Of The Dragon’ First Footage Revealed In Teaser For ‘Game Of Thrones’ Prequel

HBO released new images of the cast in costume along with the release date.

Olivia Cooke – Photo: Ollie Upton/HBO
Olivia Cooke – Photo: Ollie Upton/HBO
Paddy Considine – Photo: Ollie Upton/HBO
Paddy Considine – Photo: Ollie Upton/HBO
Rhys Ifans – Photo: Ollie Upton/HBO
Rhys Ifans – Photo: Ollie Upton/HBO
Sonoya Mizuno – Photo: Ollie Upton/HBO
Sonoya Mizuno – Photo: Ollie Upton/HBO
Matt Smith – Photo: Ollie Upton/HBO
Matt Smith – Photo: Ollie Upton/HBO
Emma D’Arcy – Photo: Ollie Upton/HBO
Emma D’Arcy – Photo: Ollie Upton/HBO
Fabien Frankel – Photo: Ollie Upton/HBO
Fabien Frankel – Photo: Ollie Upton/HBO

Considine plays King Viserys whose position on the throne complicates matters for succession in the family.

The photos also include a first look of Frankel in costume as Ser Criston Cole and Best as Princess Rhaenys Targaryen.

Martin and Ryan Condal serve as co-creators of the series while Miguel Sapochnik and Condal are the showrunners.

READ MORE: First Official Photos From ‘Game Of Thrones’ Prequel ‘House Of The Dragon’ Revealed

Sapochnik directed six episodes of “Game of Thrones” and was nominated for Emmys for his episodes “Battle of the Bastards” and “The Long Night”.

“House of the Dragon” will air on HBO and be available for streaming on HBO Max on August 21.