“We’re filming right up until the summer. When you think about it, up until last season we’d have six months to do ten episodes, so we’re [doing] way more than that for six episodes. So that obviously will translate into longer episodes,” he said.
Cunningham’s comments lend a major clue that the season is likely to premiere in 2019.
Showrunners David Benioff and D.B. Weiss previously announced the two final seasons would be split between 13 episodes.
After season seven’s seven episodes, most fans and critics are predicting a six-episode series finale. And, according to Vanity Fair, episodes are slated to run as 80-minute (or longer) features.