The 40 second cooldown of Disrupting Shout remains unchanged, but Pummel and Disrupting Shout now share a 15 second cooldown.
Now clearly having a warrior in raids with double interrupt is only a minor utility, but in PvP having double interrupt is a little too powerful. Nerfing PvP and affecting PvE once again. Disrupting Shout no longer has a part in SoO except in Garrosh, this tier now has 1 talent for 1 fight in PvE and everything else is useless.
Speaking on behalf on all classes, I'm really getting fed up with PvP nerfs affecting PvE