Baldur's Gate 3 developer Larian isn’t doing any DLC for the game, or a Baldur’s Gate 4, or anything to do with D&D in the near future. We know that. It's, uh, far too busy teasing the mysterious new things it is actually working on, and casually announcing that more stuff's going to be added to BG3 soon.
Don't get your hopes up too much though, it'll be a while until we actually see those new things, especially the "very big RPG that will rule them all" that Swen Vincke's previously hyped up, which seems separate to what he's teasing this time. You know, much in the same way you'll have to wait to see what Wizards of the Coast will do with the Baldur's Gate IP going forwards.
In its latest community update, number 26, Larian does a bit of BAFTA reflecting, lets us all know what the main headlines of the upcoming patch 7 for BG3 will be, and teases its future. Jesus, three birds, one stone - you can see why the studio netted pretty much every GOTY award known to man. After confirming that it won't be doing the stuff I mentioned it won't be right at the start of this article, the update offers a fun little statement from Larian founder Swen Vincke about what the studio's currently working on.