So, Intruder 2 will supposedly have some sort of permanent change on Toonami (unless they changed their minds on this). I assume it'll lead to a packaging change, perhaps with a new TOM, SARA, or Absolution. Who knows, they might break a 4th wall of sorts and lead to a scheduling tweak too, although I doubt it.
December 26th will be an oddball, considering it's right after Christmas and the first 'post-Intruder-2' Toonami.
Here are the ending dates assuming one marathon (skipped) night in November and December. Not going to bother with a specific DBZ Kai date.
Sword Art Online II: September 26th
Attack On Titan: September 26th
Michiko & Hatchin: December 5th
Akame ga Kill!: February 6th, 2016
Parasyte: The Maxim: March 26th, 2016
Dragon Ball Z Kai: Late 2016 (not including Buu Arc), Early 2018 (including Buu Arc)
Naruto Shippuden: AHAHAHA....
One Piece: ....HAHAHAHAHAHAHAHAHAHAHA