Damn it. They're right.
Pushing back the start of season seven until summer 2017 instead of the typical April return, the president of HBO programming blames winter. The show's winter, not the real world's.
"Now that winter has arrived on Game of Thrones," said Casey Bloys, "executive producers David Benioff and D.B. Weiss felt that the storylines of the next season would be better served by starting production a little later than usual, when the weather is changing."
Benioff and Weiss also chimed in about the delay, on a podcast. "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 any more," they told UFC Unfiltered, which must have been doing some sort of episode on a hypothetical matchup between the Clegane brothers. "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."
So you'll have to wait until next summer for winter. Oh, and the season will only have seven episodes instead of the usual ten.
(Editor's note: If you're reading this, you should have seen GoT season six already. But still, spoilers.) Now here's the good news: winter is here. Jon Snow's parents have been revealed. Dany is finally going to Westeros. This season's going to be worth the wait.