Unique Class/Skills? Or...
The Zephyrite Masters (along with the Zephyrite NPCs you see in Dry Top) are fighting using the various Aspect Crystal skills. You can use those same skills yourself during the Aspect Mastery activity that was available during the Bazaar festival.
Man I really hope we might get something like the Zephyrite masters as a profession, but I guess a lot of that is covered by elementalists. Other than that I’d be cool with trying out professions from GW1.