The plugin is available on github:
We have modified our version scheme to better reflect the version of UE4 the plugin is built again. We have added an additional number at the end to signify the plugin version, and the first 3 numbers will map to the version of UE4.
Changes from 18.104.22.168:
- Increased default cache budget so 1024x1024 and larger textures update much faster
- Published Mac libraries so you can now use the Substance Plugin on Mac
- Fixed a bug where thumbnails would not show up in the content previewer.