Elder Sign FAQ v1.0 is now available for download on the Fantasy Flight website: Elder Sign FAQs Support Page
This document isn't just errata and answers to questions. These are significantly revised rules. There is no glossing over changes as "corrections." The document specifically states in a number of places that a rule has been changed or added. The rules are clearly written, and give the impression that over the past 4 months, a serious effort was made to re-work and re-playtest Elder Sign.