Most of the comps warriors can run now will work just as good. Hunters for example are not getting any nerfs so KFC will still work, so will WMS and Warrior/Spriest/Sham. Rogue/Warrior/Healer could also be viable with the rogue buffs.
The best comp for a warrior in 5.2 will be what it was for the past 2 seasons. AKA replace warrior with a rogue, or any other class. We're going back to the class no one will play with seriously.