Ok, maybe not Faerun, but just spitballing here - Total War: Blood War. Massive armies of devils vs demons, with yugoloth mercenary forces for hire, spread across the battlefields of the lower planes. Could tie in nicely with a re-release of Planescape as well...
This Creative Assembly is a dogshit remnant of the past. Until they stop treating their developers like gig workers and stop rising prices under the lie that they're losing money (record profits once again), I don't want shit they make. WH3 has been abysmal so far
LOTR would be better. But remember, they have separate teams for historical and fantasy TW. So yeah, maybe Medieval or Empire II will happen still. Probably too early for Rome III because II is still new enough to still be worth playing compared to the most recent games.
They've already done 40k
But id agree with LOTR I'm not sure how they think dnd fits with large scale battles, and politics.
But id also be lying if I said I wouldn't play it.
Edit: Oh shit maybe it's Warhammer fantasy that they've done