Honestly, I really fail to see why some people are getting into a fuss over things. We have zero information on the class changes coming in 1.20, outside of the knowledge that they will be very significant. Yoshi-P has said in recent days that we will be getting information on the class changes very seen (over the weekend, supposedly) - so people need to just be patient.

While I personally am skeptical on how they will pull things off, hopefully they'll just be shifting all the elemental spells to Thaumaturge, and giving Conjurer Dia/Diaga + Banish/Banishga + etc. I mean, we all know we can't exactly have a black mage without black magic. In previous installments, black magic is elemental magic. It'd be pretty brazen of them to claim to want to bring back "original roles" and go a completely different route with black mage by giving them solely dark magic.