Couldnt find anything on this so I figured I might as well post about it. Dreamfall is out on GoG. And yes, it comes with the utterly superlative soundtrack and a whole bunch of artwork. I've already got the collectors edition from 6(!) years ago, but I'll be buying this as well just so that I can have an online copy.
If you've not played it, I urge you to give it a go - it is game storytelling at its best.