Well we know that Jon travels North of the Wall at some point and I expect that to be a big battle scene, but odds are that we don't get much from the White Walker besides what we get from Bran.
Samwell discovers the cure for Ser Friendzone's Greyscale Spoiler Chicken Noodle Soup, Sprite and Pepto Bismol
Take it up with HBO and the show runners, they've already hinted that there will be a 2 year hiatus, hopefully GRRM releases Winds of Winter* during the hiatus to hold you over while you wait. Spoiler