From his description to me:
It's called The Secret History of Mac Gaming. It's a narrative-style history of the Mac games scene in the 80s, 90s, and early 2000s. There'll be chapters on Bungie, Cyan, Freeverse, Ambrosia, John Calhoun, and lots of other people/companies.
For the Bungie chapter I'm talking to Alex Seropian, Doug Zartman, and Matt Soell, and trying to get onto a few of the other guys too...
Looking at the comments thread on his site, it looks like a lot of other big name old school Bungie fan people like Randy Reddig and Bruce Morrison are pretty excited about it too.