Check this out: if you drag the “Coming soon…” specialization icons into a tab of their own, the names of the files give the names of the specializations.
Warrior: Champion, Templar, Reaver
Rogue: Artificer, Assassin, Tempest
Mage: Knight Enchanter, Necromancer, Rift Mage
RIP Spirit Healer, 2009-2014
No spirit healer and no regenerating health? Oh, I’m so going to die.