Maybe I'm too jaded for my own good, but I have started rolling my eyes at these rumors because they are so constant. How many times are we going to hear the rumour that Metroid Prime Trilogy is on the way before it actually happens? I would love to see Persona 5 come to Switch, but it's another one of those games that the rumor mill is constantly buzzing around and the mainline series hasn't left Sony since it's inception! That's twenty-five years! Remember when GTA V was heavily rumoured? Nothing ever came of it. Fallout 4? Nothing. We got a momentarily entertaining port of a mobile game, and that's likely all we'll get.
Yes, rumours occasionally do become reality: Diablo III, South Park: FbW/SoT, Dark Souls, etc. More often than not, though, these rumours end up being a whole lot of nothing. They've been hitting this really obnoxious fever pitch lately.