This was an early release, mostly about putting some setting stuff down on paper for a game jam. More specifically, this has early drafts of the City and the Dreaming, which are included in full and expanded on in the main book. The book's also got four more layers, mechanics, rituals, annotations, and more.
The book's currently unfinished, I'm currently working on Act II and a couple fun supplemental materials, but as it stands it's already much more developed than the Travel Guide. My current plan is to turn this into an archive of sorts, adding other outdated Disparateum material here as I continue to work on the main game.