So much for a 2018 S8 release...
Because the season is set primarily in the wintertime, the season’s production schedule was delayed to film during the winter. And so, Game of Thrones‘ final season was also delayed until 2019.
Game of Thrones season 8 is currently filming and will consist of only six episodes, which is one episode shorter than season 7’s seven-episode length and four episodes shorter than every other season. However, some of season 8’s episodes might be feature-length.