Like some others have mentioned, we just do not know at this time.

I can certainly see the argument to be made on both sides for when these would start. There are certainly pros and cons to both sides. I suppose the one thing that seems to stand out to me is that with the current system players level the class to 30 to unlock the job. And in the expansion there is just the job.

I would plan on leveling the new jobs from 1-60 and be pleasantly surprised if they start out at a higher level. Either way, there is going to be a heck of a lot of people fate grinding the first month or so. Especially those with numerous jobs to level.