Massively who interviewed Yoshi P at Pax says the new jobs will not start at level 1. Must get to level 30 on something else to unlock them.

http://massivelyop.net/2015/03/07/pa...naoki-yoshida/

While Yoshida would not reveal the main stats of the new jobs, he did say that you will not be able to start playing one at level 1. As with other jobs, you have to reach level 30 first and do job quests to unlock them. As these extra jobs do not have base classes, the team is still making decisions about what level players will start at with them, although we likely will not be starting fresh from level 1.
Seems like it will be like a hero jobs in other mmos where you start at a higher level. I think this is actually pretty good cause the low levels are not to fun to level through.