Larian is, as you've no doubt heard, done with Baldur's Gate 3. There's no DLC in the pipeline, no sequel around the corner. Swen and co are off to pastures greener, creating something they're all very happy to tantalise us about while giving no details at all. I've decided it's Knights of the Old Republic 3, personally (it is not).
But if you think that means Baldur's Gate-style RPGs are over, then I've got news for ya, buddy. BG3 made somewhere in the region of eight hundred gazillion bucks, so you bet the suits at Dungeons and Dragons owner Wizards of the Coast are trying to figure out how to keep that golden goose a-layin'.
