Last interview I saw said they weren't ready to discuss multiclassing, which seems odd, its a simply yes or no question. Perhaps they plan on tackling the issues when all the classes are in?
Usually devs do not talk about things they haven't started to work on, because unforeseen issues can happen and then you can't make said things (see COVID19 closing down cities in Asia).
Larian talked about what was going to be in the early access and how things worked in the demo they presented.
