HBO has given a pilot order for one of the five Game of Thrones prequel series in development.
The potential prequel is being developed by Jane Goldman, who co-wrote the story with George R. R. Martin. Goldman will write the teleplay and serve as showrunner. Goldman and Martin will executive produce alongside Game of Thrones executive producer Vince Gerardis and Daniel Zelman. This new Game of Thrones series is currently untitled.
The story takes place thousands of years before the events of Game of Thrones during the fall of the Age of Heroes. It will explore the white walkers’ true origins, as well as the mysteries of the East to the Starks of legend.
Source: IGN.com George R.R. Martin's Game of Thrones Prequel Is Getting a Pilot