Dks are NO near as OP as they were before the patch..

The main problem now is immunities and damage output of certain classes...

The same classes/specs that always gets mentioned even by Blizzard is Rogue,Paladins,Mages,Death Knights and feral druids, since these classes are the hardest to burst while they burst fairly well themself they are the fotm atm. (thanks to a buffed explosive shot and deterrance) Blizzard have confirmed that they are working on changes but couldnt say if we could see a overall buff to health pools,resillience etc or direct class nerfs.