If they are going to be releasing new books before a revised rule book, I would like to see all current errata and FAQ printed in each one. Sure, it's easy to print it from the website but to be honest, IMO at least, if they insist upon such a multi-layered style of rules (which I do like) they should take more time to play test new books before releasing them.
Even in the family game market, where rules are much simpler, games are given much more time to play test. Unfortunately, the adventure game industry seems reluctant to take more time to do this even though adventure games really need it (of course, that could be because us gamers want new goodies, and we want them now! lol)