Godot 3.1 lands on Steam!

Godot 3.1-stable now on Steam's default branch
As mentioned in the previous announcement, Godot 3.1 has been released! It's now landing on Steam too, sorry for the delay.
Refer to the Release Notes for details on the many new features.
You can also watch the new features trailer on the Store page.
Important distribution change
Until now, we were shipping both Godot 3.0.6 and 2.1.5 on Steam's default branch, as Godot 3.0 broke compatibility so we didn't want to disrupt the workflow of 2.1.x users.
With the arrival of Godot 3.1, we're removing the old 2.1.5 version from the default branch, and 3.1 replaces the previous 3.0.6 version.
If you need to keep using 2.1.5 or 3.0.6, please switch to the stable-2.1 and stable-3.0 branch respectively in Settings > Betas.
Note that while Godot 3.1 is compatible with 3.0.x projects, you won't be able to keep using 3.0.x after you've opened projects in 3.1. So make copies before upgrading in case you encounter any issue with 3.1.
Note: For the time being, the version provided on Steam is the "Standard" build (as opposed to the "Mono" build with C# support). We will revisit this in the future as C# support matures, possibly for 3.1.x maintenance releases and as a dedicated product.