Yep. Godot and Blender I think

Godot has also been pushing a lot for better VR tools lately. I suspect that is another place where Valve is discretely pulling some strings.

Godot is certainly the easiest and simplest to install in terms of full engine and game dev IDE.

Whether they wanted to showcase or deliberately chose it for how it looks or not, I think the simple install onto a presentation desk/PC/Steam Machine may have been a reason as well.

Oh wow! I missed that! So cool!

I've been waiting for it.