Showrunners David Benioff and D.B. Weiss recently discussed how they need to wait on production for a while, because they want to show the change to the Winter season, both in the cold climates and the warmer ones. The pair were asked if they would be returning in April as usual, and they said, "No … we don't have an airdate yet, but this year it'll probably be a bit later, 'cause we're starting a bit later because at the end of this season, ‘winter is here,' and that means that sunny weather doesn't really serve our purposes anymore. So we kind of pushed everything down the line, so we could get some grim, grey weather even in the sunnier places that we shoot."
Benioff also said previously that the show will be coming to end after the next two seasons. "I think we're down to our final 13 episodes after this season. We're heading into the final lap. That's the guess, though nothing is yet set in stone, but that's what we're looking at."
It may be months before we know a release date; HBO waited until January of this year to announce the April 24 Season 6 premiere date.
