The harp is a lie.

[FestAkos]

So what are they planning? You access the jobs after 30 with the current classes then eventually they get rid of all the current classes, fully replacing them with the 'jobs'?

Well, this is the question on all our minds. The devs simply haven't given us enough information on the subject. But from what I understand jobs will be more group oriented and the armory classes will be more solo oriented. So if you like archer as a ranged DD right now, you might be out of luck until they add the Ranger job.