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After some pretty quick updates following the initial release of Steam Play, things have quietened down somewhat. However, work on the next version of Steam Play is in progress.
With artwork quite a bit like Darkest Dungeon, the turn-based strategy game that mixes in RPG and rogue-like elements Deep Sky Derelicts is now on Linux and officially released.
DotLine from The Selenite Forge who also made Bionic Attack is a minimalist puzzle game that tries to challenge your brain, out now with native Linux support.
Geneshift (also known as Mutant Factions or Subvein) is a top-down shooter with some seriously good action that's currently in Early Access and the developer has decided to add a Battle Royale mode.
Failbetter Games have announced that Sunless Skies is set to leave Early Access on January 31st, 2019. They've also released a free pen and paper RPG system.
You think we were done writing about Steam Play? Wrong. Here's what Godot Engine's Rémi Verschelde and Marc Di Luzio (previously Feral Interactive, now at Unity) think about it.