Anybody know if Ubuntu will be getting support? I see there's no Linux at all listed, but thought someone might know if there's a chance. The Noita looks fun!

Devs are a small team, only known comment on this is the following: Is Noita coming to platform X?
During Early Access we're focused on PC.
After that we might look into porting to other platforms.

I managed to make it run on Linux, using Proton and innoextract. You should first download the game's setup on the gog website, then move it to a directory in which you want to install the game. Then use this command to extract the setup's contents:
innoextract --gog SETUP_FILE. (replace SETUP_FILE with the name of the file you've downloaded)
When everything is extracted, start Steam up and add "noita.exe" (you'll find it in the game's directory) as a non steam game. Enable proton support for all applications. Launch the newly added game with proton and if the right version is selected (One of the latest 4.something versions).
This worked for me on Arch Linux, can't guarantee it'll work with your OS, though.