Sources report that today Game of Thrones is filming portions of a massive battle in Saintfield, Northern Ireland, that will likely be a part of episode nine. Preparations and the beginning of filming were seen in that area recently, but it was difficult to glean many details. We’ve learned that the battle will involve many northern armies fighting including the Umbers, the Boltons, wildlings and more! The true major spoiler is this: Kit Harington a.k.a Jon Snow was also seen at the location, participating in shooting this week.
http://watchersonthewall.com/game-of-thrones-gets-theatrical-plus-massive-spoilers-for-season-six/#more-44852Sounds like the Grand Northern Conspiracy just got a buff, fellas. I would have bet that Jon would go north, not south. So he wargs, gets rezzed...and is chased away from the Wall? Or does he leave on his own. Or do northern lords show up at the Wall to scope him out, like in ADWD. Maybe he leaves with them, learns the Umbers are planning on betraying the Boltons, and the battle happens outside Winterfell.
Basically sounds like they killed off Stannis in order to give his role to Jon. So he'll defeat the Freys and Boltons, retake Winterfell, Rickon potentially shows up, then they...head back to the Wall? I'm guessing they have to be there when the Others show up.