According to HBO programming president Casey Bloys, he has confirmed that the season is expected to debut in the first half of the year. Bloys was quoted as saying, “I don’t think we’ve announced the date, so sometime in ’19. I’m not gonna tell you what to expect, but it’s pretty great.” When pressed further for specifics, Bloys admitted that it would be in the first half, but beyond that nothing else.
This shouldn’t be surprising because previous Game of Thrones seasons have been released in the first half of the year, so we doubt that season eight should break from tradition. However as you might recall, Game of Thrones star Maisie Williams seemed to have confirmed that the final season will debut in April 2019, so it’s strange that Bloys would not at the very least confirm that.
In any case only time will tell as we expect HBO will confirm a more specific date at a later point in time. In the meantime while it will be saddening to see the series end, HBO is said to have ordered a pilot episode for a Game of Thrones prequel which means that we can expect to see more Game of Thrones-related content in the future.