Two new Warcraft figures are getting added to Heroes of the Storm.
First, in just a couple weeks, we'll be getting Varian Wrynn, the recently-departed and High King of the Alliance.
Varian will be a hybrid warrior/assassin, who appears to be able to go Arms, Prot, or Fury depending on the talents you take, which should be a great versatile option for adapting to other teams' compositions.
Ragnaros is, I'd assume, a Specialist, who has massive wave-clearing abilities and can even take over a fortress (whether it's been destroyed or not) to get huge and smash things.
Blackheart's Revenge is a brawl in which one side will attack while the other defends. It appears the attacks will need to keep Blackheart's ship from getting destroyed.