Newly translated part from Yoshi P Q & A from 3 Year Anniversary Broadcast

[Cidel]

So, if we consider that the gatherer is confirmed, that would leave 2 DoW/DoM jobs.

That's possible I suppose, but if you reread this:

Gatherers may see some new additions. Yoshida may consider allowing dairy farming and breeding as new gatherer jobs.

It sounds as if new gatherers are still currently not set in stone and are only being considered so far. If he "almost" said how many jobs 4.0 will have then I'm guessing that's including the jobs they know they're releasing for sure.

I may be reading too much into the wording of the translation, but I get the feeling that any additions to DoL will be afterthoughts, especially if they are freely discussing them and not keeping them a big secret like DoW/M jobs.