Do you think the deadly Dark Souls computer game would work as a 5e RPG on the tabletop? Steamforged will try, and they're going to do the same with RuneQuest. Paizo make a critical hire, Monte Cook Games make a free preview available and more this week.
While the possibility of an RPG in the Demonworld setting does remain, it will not be a priority in the short or medium term.
FASA has been publishing the third edition since 2014 and has been working on a Demonworld RPG for years.