It appears that Blizzard now displays quest information in the tooltip, very similar to how Carbonite does it. This means I now see the name of both the quest as well as the number of items/kills still required listed twice. It looks like Blizzard messed up as there is no way to turn it off in 3.1.1 and while I suppose I could just turn off Carbonites instead, I would rather not. For one Carbonites is better. It also works for items in your bag where as Blizzards does not. Perhaps you could add a feature which overrides the Blizzard tooltip quest information, replacing it with your own?
PS: Surprised no one has noticed this yet.