2.0.6 proves it.

It is now official. I didn't want to believe it at the dot nerf, but it's official now.

BLIZZARD LISTENS TO TROLLS AND WHINERS.

First they buffed dots. Everyone whined, and now they are nerfed. Mages got GCD on CS like everyone else has. Did you know that Zangarmarsh was a desert? They made it a swamp with all the tears. It's now off GCD. Add the mana shield buff to that, and they will be able to beat casters too with 100% health remaining now like they always used to beat melee before.

Hunters got nerfed too. They were the secondary target of the trollings, got as many locked threads as we do.

So, if you want Warlocks to be useable from 3 months from now on, for god's sake, start whining like 10 years olds and we'll get everything!

Edit: Link: http://forums.worldofwarcraft.com/thread.html?topicId=69997048&sid=1