Grim seemed to hint at that in the text of the Canon Fodder update:

While much fun has been had over the years by fans finding these gems hidden throughout everything from forum posts to game manuals to map reveals, it can make things a bit hard to keep track of sometimes. With that in mind, we wanted to create a place where new fans can make old discoveries and old fans can make new speculation, all in one handy location.

Since they're not currently in there, I figure they're going to be added later, otherwise why make mention of them? Interesting that map reveals and other, more obscure stuff is likely to be added as well, in addition to stuff that was released as standalone documents.