Sounds great, but I've always been a little apprehensive about the whole alphabetical listing.  I would have liked something more categorical.  Hopefully there's a copious amount of "sees" and "see alsos".  Tor.com did a cool article which contained a chronological list of all the Amyrlin Seats.  I read it and thought of how cool it was, then was disappointed when I realized it was a list they had compiled themselves, and if I wanted to know about any of these little known historical characters, I'd have to already know their names so I could look it up alphabetically.  Well, regardless, my copy is preordered and I look forward to all the information that will be in this book.