Beautiful!
Thanks a ton for putting the effort writing all these articles, I think it’s safe to say at this point that you have my favorite UE4 shader blog 
I greatly appreciate it!
Will something like this make into the engine sometime in the future? (I mean like a volumetric cloud system and/or volumetric example content and whatnot).
Also since I’m writing this, your caustics video (ContinousSpectralPhotons) looks super duper fricking sweet! I’m dying to learn more about that :o is that something you are planing to release as well ?