Well, it's been years and years, but at long last, these came to my door:
(https://pbs.twimg.com/media/DZZ3lJIWAAI5m6q.jpg)
That's the basic book, if you will, the complete rules.
And this (at almost 500 pages) is the full rules plus Gamemaster Guide:
(https://pbs.twimg.com/media/DZZ-qqhWkAED-MV.jpg)
And man, are they great.
Of course I'll be doing a full review of Raiders of R'lyeh (http://www.drivethrurpg.com/product/209168/Raiders-of-Rlyeh-Gamemasters-Guide--Core-Rules), but I just wanted to share this now. I was a consultant on this book and was a big part of designing some parts of the rules. And I think it's a truly great game.
So be sure to check it out!