I knew they'd make us wait with Jon, but it seems pretty clear that they're going to try and have the Red Witch bring him back to life. Between Davos saying they could ask the Red Witch for help and her saying she saw him in the fire fighting in Winterfell, they're setting the story up for it. Unfortunately, I think they'll play it out over the season with Jon and Sansa, after being brought to the Wall by Brienne, ultimately battling Ramsay Bolton at the Wall before marching south to take back Winterfell.
And how about what's going on in Dorne?! Pretty crazy stuff!