In regards to "why are we getting Sorcerers" - I highly doubt that Larian is actually working on the remaining classes one at a time - just based on the way Sven talks about the EA process:https://www.eurogamer.net/articles/...impressions-and-an-interview-with-larian
The lead systems person I spoke to said there wouldn't be another big update to BG3 for a while now. Is that right?
Swen Vincke: It will take several months for sure. We're doing this balancing act where we're releasing these updates, but we're also trying to finish the game. And every single update is like release because you have to really tie up and polish everything, and it interferes with release. So it'll certainly be several months.
Monk/Paladin/Bard/Barbarians are all probably in the cooker along with the Sorcerer. It's most likely that the Sorcerer was the first one of the remaining classes to be ready or least disruptive one to be pushed into the EA builds.
I don't think there's a grand plan of - "Oh, let's release Druid, then Sorcerer, then X, etc, in this precise order".
The design of Bard/Paladin/Monks are probably fluctuating each time they play with the Reaction system update (which they've talked about), and I wouldn't be surprised if the Barbarian is in a similar situation with the advantage system (which just got changed in Patch 5 and again in Patch 6).