I'd love for these rumors to be true, and maybe they'll turn out to be, with Nintendo announcing a bunch of surprise releases for the year ahead in a few months like they did last year and these being among them. But look, Nintendo has factually demonstrated less interest in continuing this franchise than just about any other they've got going and that's a reality. I'll believe these rumors when I hear them from someone official in Nintendo giving an official statement on them.
Also, I don't know how much I want a Super Metroid remake, tbh. The original Super Metroid is special to me and one of my favorite games of all time (it will be one of only two Nintendo games to crack my top 25 this year) and is pretty much perfect in my view, and it's also already available for play on the Switch now. I don't know if I want them to "improve" it with polygonal graphics, accelerated game play with more enemies and less of an exploration focus, and longer, blonder hair and a slimmer, de-muscled, "feminized" armored suit for Samus. But maybe that's just me.