So, since I haven't seen any questions yet about this...

1) When are we going to get Dark Knight, if ever?

I know there was mention of it being linked with Gladiator/Paladin, but I'm curious to know when exactly is it being planned for release? I'd like to see it as an update, but I'd be content with it being in an expansion.

I just want to know if I should save my atmas for it, or if it's so far away that I mind as well wait and farm another set.