Seeing what a damn bore the Outer Worlds was I definitely think that mentioning the names Tim Cain and Leo Boyarsky being involved in an upcoming project doesn't mean it will be a great RPG experience. If they coasted on that then I think that wave has subsided by now.
I still hope for one good Fallout project. Probably a fan made one. (F***, this is why I want to make one myself)
A sort of final goodbye, kind of what Curse of Monkey Island was.
There would perhaps be room for more entries after it, but there is no need to get these because of the name they carry. The story for most people would now be concluded.