So now that there is a 99% chance that the expansion will revolve around bolvar, we can begin speculating about which class they are going to do. The most popular ones are as follows
Tinker
Dark Ranger
Necromancer
Dragonsworn
Personally, I would love for it to be necromancer. It's basically my dream class. Just mowing down people with legions of undead and corpse explosions and ice and plague and oh my god it would be so epic. Tinker could be cool too, but only if its Goblin/gnome exclusive. I have little faith in Dark ranger and Dragonsworn. Dark ranger is basically a horde class, Delaryn and the like went back to the forsaken, which are still horde, and Dragonsworn is only a thing we are just thing thats surfaced now. Has there even been a thing as a Dragonsworn in lore?
The alternative would be to axe unholy, give death knights a fire themed/dragonsworn spec and make room for Necromancers. Same way they removed metamorphisis from demonology to make way for demon hunters. It also thematically fits with a death themed expansion.