No wands with Shadow dmg after level 40?

I can get a wand that does Fire, Frost, Arcane and now Nature damage from the AH or as a quest reward. I haven't seen a green wand that does shadow damage higher than the Umbral wands which are level 40.

I know there are a select few wands that do shadow damage but those are random drops from instances.
I would like to have a shadow wand as drops or quest reward, since shadow damage is our bread and butter