[JUST SPECULATION]
So, in the alpha build we heard that King Varian is probably gonna die and Anduin will be King.Since Anduin is pretty young(16-17yrs) could Jaina be ruling in his stead as a Lady Regent,kinda like Bolvar pre WotLK.This could explain why she isn't the leader of the Kirin'Tor anymore.
Your thoughts on having Jaina as human racial leader ?