So I'm following a tutorial where the person adds a principled volume shader and I don't seem to have it and can't find it at all. I'm using blender 2.9 if that helps. Is there possibly anything I'm missing as it's confusing the heck out me
If you don't want to use Blender 2.8 yet, you need to use the latest build of 2.79. You can download it here
Unzip the package and start Blender directly from within the unpacked directory.