Game of Thrones finale set for 2019

Game of Thrones will reach its conclusion in 2019 with a six-episode eighth season but HBO has not revealed at what point in the year it will air.

This photo provided by HBO shows Kit Harington as Jon Snow in the Season 7 finale of HBO's "Game of Thrones." Source: AAP

Game of Thrones is officially coming back in 2019, HBO has announced.

Season 7 of the hit fantasy series aired in July and August, while the previous seasons of the show had aired in the northern spring. It is unknown at this time at what point next year Game of Thrones will air, but the final season will consist of six episodes.

Series star Sophie Turner previously told Variety production on Season 8 began in October and is set to run into the middle of 2018.

Season 7 of Game of Thrones was the show's highest-rating yet, breaking several records in the process. The season finale was watched by 16.5 million viewers, including people who watched the episode as it aired and night-of streams. Of those, 12.1 million watched the episode as it aired, making it the most-watched episode in series history.

Directors for the new season are series creators David Benioff and DB Weiss, David Nutter and Miguel Sapochnik.

Benioff and Weiss will also write the new season along with Bryan Cogman and Dave Hill.