HBO
After Game of Thrones story line began outpacing the published novels in the sixth season, the series was based on a plot outline of the future novels provided by Martin along with original content. Before season four, Martin stated there was an issue with the television series being released before the source material could be written. According to Benioff, Martin gave the showrunners an outline on the final two books of the series. In April 2016, the showrunners' plan was to shoot 13 more episodes after the sixth season: seven episodes in the seventh season and six episodes in the eighth. Later that month, the series was renewed for a seventh season with a seven-episode order. HBO announced in June 2016 that the eighth season would be the final for the series.
