Bard...

[RemVye]

I haven't heard anything from the devs that says specific classes come to be specific jobs. All I've read is that you have to be level 30 in order to get a job quest. Maybe I'm missing a piece of info, but I think it'll be free choice like in FFXI.

Well then you haven't heard much... it's been old new for a while now. See above post.

[Inaaca]

Unless they plan on adding a new class, jobs to classes can't be on a 1:1 ratio. Yoshi stated in the live letter that there's an unannounced job coming.

[Belial]

Unless they plan on adding a new class, jobs to classes can't be on a 1:1 ratio. Yoshi stated in the live letter that there's an unannounced job coming.

The "unannounced job" was Warrior... Which he then showed a picture of, depicting a two-handed axe wielder.


Edit:

Job
- 1 class 1 job
- For supporting job/class the exp is shared, when changing to the job the exp gained will go into the class so you can change job easily
- for job change if the class is level 30 you can clear the quest.
- After there will be quests every 5 levels, with each quest clear be able to learn new action or obtain specific gear

Source:
JP -> English Thread