My prediction.
Jon leaves for Dragonstone before Bran gets to Winterfell to tell him what he knows about his lineage. Jon is respected by Tyrion and is an honorable king more concerned with defeating the White Walkers than power which makes him a good match. He also is the most eligible bachelor in the Seven kingdoms with the most backing at the moment. Jon and Dany are going to strike a bargain of marriage for the rights to mine the dragonglass and assistance going both ways in the coming wars. Then they will later find out the truth, though it will be too late.
As for the episode.
The Arya scene was phenomenal. Winter has come could have some alternate meanings, though I'm not sure yet.
There was also two sides shown from the "siblings" I found interesting. Jon was not going to take the sins of the father out on the sons. Sansa wanted the complete opposite. What's interesting is Arya sitting with the soldiers sees the metaphorical sons and how they are just following orders. She saw that they were normal people. Will she follow Sansas words and do whatever it takes to get her revenge no matter the people in the way, or will she follow Jons words and punish only the few who deserve it?
Loved the Hound scenes and all of his comments. I get the sense that him being touched by fire has given him powers we have yet to understand. And also, he sees "a mountain"! Hound vs the Mountain confirmed?
I also think that the gift Euron intends to deliver is the head of Tyrion. I hope he doesn't succeed in that quest, but that is what I expect to be his goal.
