What is the plan for this game going forward?

Beside patches, what are the plan for this game going forward?

I know a Black Legion game is in development but it would be nice to have 1 or 2 more masteries to play with like one with aether/lightning and chaos/lightning which have the gears and devotion but no proper mastery to actually use them.

More legendary and epic gear to support current existing masteries are great as well.