Since some people are waiting for this anxiously,
You can copy SketchUp 2019 plugins folder's Enscape into SketchUp 2020's.
This does pose an error at the beginning that you can just say 'no' to.
Copy both 'enscape' folder and 'enscape.rb' file, and paste into:
This is a manual way of copying extensions and plugins for SketchUp, and I am not responsible for any mishaps in this method!
BIG&GIANT* This is not a legitimate way of using Enscape. If you want to do the safe way, wait for Enscape's official release!
But I have been using Enscape in SketchUp 2020 this way since the release