More spoilers. These are from reddit user truede who gave the following correct spoilers around the time of episode 1.
--Sansa will go to Castle Black and meet up with Jon. They will reminisce and Sansa will apologize for treating him badly. Sansa will also have a quick meetup with Baelish. Jon and Sansa will eventually team up to try and get their brother back. They have the Wildlings on their side and then travel around and try to recruit more people.
--The Whitewalkers were created by the Children of the Forest.
--You will soon learn how Bloodraven came to be. The Whitewalkers attack Bran and company and Hodor will be forced to 'hold the door' as they make their escape.
--Euron gets chosen to be the new king because of his plan to marry Dany and enter into an alliance with her to take King's Landing. Yara and Theon steal their ships instead and plan to enter into an alliance with Dany instead.
I don't remember exactly as the scene was brief. Bran has a vision of a bunch of the CotF gathering and doing something. He wakes and then confronts Leaf about creating the Whitewalkers. She says they did it to protect something. Bran then has a vision of the Whitewalkers but the Night's King actually senses him and that's how the Whitewalkers learn of Bran's location and attack. That's all you see from them this season.
Sansa ends up meeting Baelish at the town outside Winterfell. Brienne goes with her. Baelish apologizes for allowing her to marry Ramsay. Sansa accuses Baelish of knowing about Ramsay and basically says she doesn't want anything to do with him any more.
Osha should be dead in the next episode? Or maybe the one after. She and Ramsay are talking. She tries to seduce him and grab a knife that is lying nearby. Ramsay reveals that Theon told him EVERYTHING and then kills her.
Either way, what does definitely happen in the next episode is Jorah and Daario see Dany and are about to save her. She tells them she doesn't need to be saved and instead has them help lock her in a tent with the other Khals.
Ep 6-10. From a now deleted truede post. Mostly recovered from comments and 2nd hand accounts, because r/gameofthrones mods are dicks.
--Uncle Benjen will come to rescue Bran and Meera. He will accompany them to The Wall before departing. Bran will have one more 'flashback' in the finale and we will see what's in the Tower.
--Who else is still alive? The Hound. He is saved by some followers of some sort. They all get killed by some former Brotherhood Without Banners members while he is away. The Hound meets up with the other Brotherhood Without Banners and gets revenge.
--Davos will find the little toy or whatever he gave to Shireen. He will confront Melisandre and she will admit to having her burned.
--Jaime is forced to go to Riverrun and retake the castle from The Blackfish for the Freys. Brienne also goes to Riverrun to try and get the Tullys to join up and retake Winterfell. Brienne fails but escapes. Edmure is forced by Jaime to enter Riverrun and give it up since he is the rightful owner. The Blackfish apparently dies in battle but we never actually see it happen.
--Samwell's father doesn't approve of Gilly. Samwell decides he doesn't care and leaves. But not before stealing his father's Valyrian sword.
--Arya will be asked to kill some actress. She refuses and The Waif is given permission to kill Arya.
--Dorne will not be shown again until the finale.
Cersei's trial by combat gets denied, Mountain kills the Septa Unella.
Truede also answered some questions in that thread:
--Most notable to my mind was How does Tommen die?to which Truede answered "He jumps out the window."
Lyanna whispers something to Ned before she dies. We then see a baby, and the very next scene we see Jon.
Jon almost kills Ramsay.
No, only Dany. Dragons don't really interact with Tyrion. And yes lots of major characters die. Mostly in the finale. Don't wanna spoil all of them but Tommen does die. Osha dies pretty soon but she's not a major character. Also we can assume the 3ER dies when the Whitewalkers attack. But really all that matters is that Wun Wun lives.
Jon chooses to imprison Ramsay rather than kill him.
Jon does become King of the North. This is after the teen girl who is head of some house (with like 60 soldiers) speaks up about how she trusts the Starks and was one of the only ones to follow them into battle. Then the other houses speak up and apologize about not following them and they don't care that he is a bastard.
The recruiting scene is pretty funny as Jon, Sansa, and Davos make these great speeches on why she should join them only to find out she has less than 100 men. Don't think Sansa legitimizes Jon but she is agreement that he should be King.
Ramsay and Jon meet across the battlefield. Ramsay releases Rickon and tells him to run toward his brother. As Rickon runs, Ramsay starts shooting arrows up in the air one at a time that keep missing him. Jon starts galloping toward Rickon but just as he reaches him, one of Ramsay's arrow hits him and he dies in Jon's arms. Sansa is the smart one. She tells Jon before the battle that Rickon is already dead.
I've been sitting on this for a while and now that it's firmly seated in my rectum it's time to share.
Could be false but the parts that have already happened in the books are consistent. In fact, I would be even more impressed if someone sat down and wrote such a delicious piece of fiction.
Self-gratification is only 1 click away.