Of course Turalyon and Alleria will become neutral. Blizzard would make them Horde if they could.
You know how much Blizzard love the Horde. I remember the hell I went through on my Alliance paladin in vanilla, then in TBC Blizzard gave the Horde paladins with an AOE silence. They gave the Horde superior paladins. Hell, Vanguards still plays a Belf female.
Blizz should nerf Every Man for Himself so everyone rerolls Horde. It would be really fun to watch.