While the release is a little while away, we have it confirmed that the story-based action platformer Lost in Sky: Violent Seed will have Linux support.
Here's one we missed that released. Garden Variety Body Horror, a 90's styled survival-horror that acts as a sequel to Prototype Mansion released with Linux support.
THQ Nordic have announced that they've swallowed up another IP, this time it's Carmageddon from Stainless Games. It's interesting, since we were supposed to get Carmageddon: Reincarnation on Linux.
Legend of Keepers: Career of a Dungeon Master from Goblinz Studio is what they're calling a mix between a 'Dungeon Defender and a Roguelite' and it does look good. It will support Linux too!