If you go to this page on Nintendo's official website for a Super Metroid themed skin for the Switch you'll notice something very interesting. In one of the photos of the skin on a Switch you'll see a Metroid game playing on the system, but rather than show something like Metroid 1 or Super Metroid, two games on the Nintendo Switch Online service, they instead show a shot from the intro to Metroid: Samus Returns, the 3DS remake of Metroid 2 that came out in mid 2017.
This discovery was actually first made by YouTuber PapaGenos and right now no one is 100% certain if this is another case of Nintendo accidentally leaking an upcoming announcement like what happened with Kirby Fighters 2, or if an intern who was in charge of making a photo mock up grabbed a screenshot from the wrong game, but people were quick to notice the screenshot of Samus Returns looks noticeably much higher resolution than the 3DS original.
One likely scenario is Nintendo is probably planning on announcing a Switch remaster of Samus Returns for an early 2021 release, and this could also be a sign that Nintendo could potentially bring over other 3DS remasters to Switch given the system has no backwards compatibility (if Nintendo does a "Zelda Collection" for the 35th anniversary of Zelda I'm hoping they include both the original N64 versions and remastered 3DS versions of Ocarina of Time and Majora's Mask).