The next update is live on the testing branch (for demo too) in case you want to try out the changes before it goes on to the default.
I don't expect it to stay there long though as I might move it to default already on tomorrow if no major issues pop up, so if you don't want to try it out now you'll get it in a day or two anyway.
There are a lot of change on balance, QoL and bug fixes. You can see the notes on the main menu and I'll make another post with the full notes when I move it to the default branch.
There should be no breaking changes, but I do recommend creating a save game in the current 0.5.17 before you change in case something unexpected happens.
Also keep in mind the saves are not backwards compatible so if you play in testing branch and save, you can't load that same save in 0.5.17 anymore.
You can enable the testing branch by right clicking the game in your library -> Properties -> Game Versions & Betas -> Testing.
As usual, if you encounter bugs use the in-grame report button in pause menu to report them, thanks!