First of all, I linked this image from a post in my guild-forum, I do not claim any ownership over it and do obviously credit <anonymus person> for it.
Also it's supposed to be a joke, at least I take it as such, so just take it with a bit of humor.
That said, here is a link to the first official drawing of the future Tier 7 for warlocks (The one in the image is for gnomes, you would have to scale it up for other races)