I just completed a new project and like to share this on Blenderartists. Five months ago i started working on a new set of environments to update my Environment course. I started from scratch and used Blender 2.81 to design all the scenes.
I had some limitations in size because i didn’t want to make to complex scenes. It turns out that the final content was more user friendly than the previous course, simply because i simplified a lot of things.
If you are interested in making 3D environments, you can take a look on the Blendermarket.