Hi, I feel that this episode was a bit disappointing in that there was little new information. It was interesting to see how some characters reacted to info that we knew (e.g. Sam Tarly, "Jon Snow", Bran's insight that the KK had breached the Wall).
I did not see Sam taking the death of Dickon so hard, for one thing. Nor did I think he would be surprised that he stood by his father in his allegiance to Queen Cersei.
Speaking of Sam, I do hope that one of the books he took from the Citadel was the High Septon's diary that described annulling Rhaegar's former marriage and new one to Lady Lyanna. I think that Jon (or someone else) is going to converse with Dany about this, but beyond Bran's visions, what hard evidence would anyone have? Even a transcribed diary is dubious evidence at best.
So, not much new information except for the current position of the WW, and interesting to see the reactions of characters to information we've known for 1.5 years.
Looking forward to more! Cheers!