http://us.battle.net/wow/en/forum/topic/1765534540

"Howling Blast now deals 40% less damage to all targets other than the primary target of the spell."

40%... thats a huge ass nerf purely because of the AOE dps they were doing in PVE.

on a positive note...

"Icebound Fortitude now breaks stuns when used, in addition to providing immunity to them."