I'd bet money it'll look like this:
S5 2015=AFFC/ADWD/one TWOW arc
spoiler (click to show/hide)
Bran, possibly Sansa too
S6 2016=ADWD/parts of TWOW
S7 2017=TWOW/part of ADOS
S8 2018=ADOS
This season already is doing three AFFC/ADWD arcs and will get close to finishing them.
spoiler (click to show/hide)
-Theon: I'm pretty sure his arc will end with him meeting "Arya" and traveling to Winterfell
-Brienne: The actress mentioned she bites someone's cheek off this season so we'll get the Rorge/Biter fight. I think she'll be taken to Stoneheart for the final scene of episode 10.
-Dany: The bones of the farmer's daughter will happen in episode 10. There are rumors that she locks the two dragons up this season/Drogon escapes.
-Bran: Bloodraven and Leaf have been cast this season
I really think they'll cut nearly every new POV from AFFC except Arianne. They might also mix Euron and Victarion into one character, or replace one outright.