The Bills, after facing on of the easiest schedules this past season (AFC North, NFC East), face a much tougher one next season.
It gets harder in terms of both travel (AFC West and NFC West - yikes!) and opponents (Chiefs, Niners, Seahawks, Rams, Steelers, Titans).
I believe they are also, along with the Texans and Saints, one of the only teams to face 3 or more of this year's championship contenders:
-Obviously this year's SB matchup hailed from the divisions the Bills play, and they also get the Titans since they both finished 2nd in their division.
-The Texans get the Titans (obviously) plus the Chiefs, who also finished first, and the Packers, since they play the NFC North next year.
-The Saints get the other 1st place finishers Niners and Packers, plus the Chiefs since they play the AFC West.
I couldn't find any other teams that drew 3 or more championship teams. The Ravens are the only other team to get both the Chiefs and Titans, but they get the NFC East (so no Niners or Packers), while the Eagles get both of those, but no Chiefs or Titans.
And then of course the entire AFC East and the Saints are the only ones that get both Super Bowl teams.