This is unimaginably tragic.
The team did release a statement on the matter, though (below):
Like the proverbial winter, Game of Thrones is coming. BUT APRIL 12th IS STILL SO FAR AWAY!
But thanks to these new clips, we at least get to see a glimpse of Kit Harington and Gwendoline Christie!
This is the most we've seen of Season 5 by far!