Quote Originally Posted by Mezlabor View Post
Isn't that exactly what WoW did when they added death knight? you couldn't just make one unless you already had a character at 60
Well as I said before Yoshi-P announced during the revealing of both DK, Astro, and Mach that the only lock for them will be to unlock the Armory for your character just like Rogues.

As long players have unlocked their Armory they can obtain DK, Astro, and Mach anytime they want as long they can reach the Job Trainer.

Only issue beyond that is to reach the location where their Job Trainer will be which remains unknown for now.