Right now they can't seem to decide if that's the official title of the ninth episode of Season 6 or not
But if it is, then that can only mean one thing.
Jon Snow vs. Ramsay Bolton.
Who's going to win? Jon, one of the main heroes of the series, or Ramsay, one of the two most evil villains of the series (other being Joffrey, who's been dead since Season 4). I know who I want to win, and I think everyone else shares my sentiments
Also of note, every ninth episode of an even season has entirely revolved around a big battle without jumping to somewhere else. Season 2 had the fight with Stannis at King's Landing, and Season 4 had the fight with the wildlings at the Wall. Maybe this episode will do the same? Another thing to note is, the leaders of both parties survived the battle, although Joffrey, Stannis, Alliser, and Mance ended up dead in later seasons.