Beyond Blue (originally an Apple Arcade timed exclusive) was already released this week on X1, PS4 and Steam, I‘m currently playing it on X1. Unfortunately it‘s not out yet for Switch, where it will probably sell the most due to the similarities to the Endless Oceans games.
My favorites of the showcase are
Gamedec (looks fantastic) https://gamedec.com/
Everspace 2 https://www.everspace.game/
Gamedec surprised me. I hadn't heard about it before, and it tries different things I like. I say try, because it goes in so many cool directions, I get doubts they can deliver all that. If they do, then it surely will be nice.
You are right, some games are out already, Beyond the page is another one. But I think it is alright to draw attention to cool indies, even after release.