Has there been any indication by SE on how many new classes/jobs we can expect in 2.0?

Is it pretty much confirmed that the design philosophy is going to be adding a class with a corresponding job?

I would love to see at least two classes/jobs added in 2.0. However, my biggest concern with the design philosophy is that adding more classes is a waste of time and effort.

I would love a Thf class followed by Ninja job, but if the trend continues.... the ninja will be used 90% of the time, and you've wasted the possibility of having Thf as a job.

Wouldn't it be better to have 2 or 3 jobs offshoot off of a single class.

does it make sense to keep designing new classes for all the new jobs if those classes are going to be forgotten or go unused?