This "rumor" may have no real evidence to back it up, but this isn't the first time that a similar rumor has surfaced as well. This particular "leaker" has been correct about previous Nintendo Direct leaks, hence why this rumor has gained any traction at all. But of course, nothing is confirmed until Nintendo makes a statement regarding these games themselves.
Nintendo is planning 2 new Metroid titles that will release in the next two fiscal years respectively. One is a re-release of Metroid Prime Trilogy HD, the second one is a Super Metroid Remake that mimics Samus Returns in style and scope.— LeakyPandy (@LeakyPandy) November 25, 2019