I don't think so, there is another which provided a demo a month ago. It even had proper reactions which I haven't seen any D&D implementation do. It was really amazing stuff, even if the narrative quality of the game was still hanging up in the air. It was such a perfectly literal application that I was deeply impressed.There are only two D&D games in production: BG3 and Dark Alliance, and the latter is an action game. You're either thinking about P:WotR which is Pathfinder and not D&D or Realms Beyond which uses WotC's OGL rules.
EDIT: Should've clarified: there are only two D&D games in production that were already revealed (there are actually many more according to WotC).
And I found it!
Also given how much I'm having fun with Kingmaker, I can't look forward to WotR more. I'm no D&D purist either so I don't have an issue calling it D&D. Most of all, I adore the kind of mood and atmosphere Owlcat managed to elict in that game. What's even more impressive is that it's actually 3D and not simply pre-rendered from a single perspective as Obsidian's PoEI/II are, while still achieving such an impressive visual result.
I'm rambling, but basically BG3 fails to excite me, and I'm more hyped for Solasta than it at this current juncture.