http://i.imgur.com/Mnmyj.jpg
Paladin, Black Mage, White Mage, Monk, and Warrior look confirmed. Guess the "Dark Knight" armor was for dragoon or whatever they end up naming it.
...And is it just me, or does it look like the Archer job has some sort of bow/harp hybrid? :>
Higher resolution thanks to Ark_mage2
http://i53.tinypic.com/wveibs.jpg