http://paizo.com/pathfinder/pathfinderCompanion/v5748btpy81x9&source=search
I think at this point, given your publications, congrats are in order on having "made it" into the D&D industry...but don't for a second think we aren't going to get you to finish your story hours, I've got a The Book of Keeping (autographed by Xideous) for just such a purpose.
Edit: Dangit... I didn't look at the link before I typed the stuff below. I thought you were talking about The Great Beyond. Actually the Osirion book was written prior to my getting to do Paizo's cosmology book, and I finished it back in August or thereabouts. I was really happy to work on it, because it's outside of my usual thematic haunts, and it was a lot of fun to work on. But still, expect some planar easter eggs where appropriate.
Original post - applies to The Great Beyond:
There are a few storyhour eastereggs to be found perhaps in the book (which I'm likely going to be finishing this week).
And as soon as that gets turned in to my editors* I've got an ecology for Pathfinder's CN natives, the proteans, but I've also had a burning need to finish up the current storyhour arc in Pandemonium, because it and the next plot arc are where the overarching storyhour/campaign metaplot will be revealing itself beyond the little hints I've given so far.
*and yes, there's some irony in SKR being my editor/developer on this when I kinda, well, busted his chops online a few years back over the 3e FR cosmology changes. *blush*
Buy some of SKR's wife's soaps. That should put you back on his good side.
http://www.seankreynolds.com/soapsbywillow/
Congratulations, looks like an interesting read!