6 of last year's 8 division winners will not only fail to repeat, they will likely not even make the tournament. Houston could make it 7 as they will probably have to win in Ten to beat out the Titans in week 17 and I don't think 9-7 will get them a wild card.
I think that's an unpresidented degree of turnover at the top of the standings.
I'm pretty sure New England will win the east until the corpses of Belichek and Brady have both turned to dust. Maybe even then.