All in all, it sounds rather disappointing. Another stat is not really needed, and would require every creature and character to be modified. The race construction rules sound interesting, probably the best part of the book from the description. New classes and PrCs are expected, and these sound ok, but I have too many already. I only use Alignment as a rough guideline, if at all, so a much more precise alignment system doesn't do anything for me. I already have mass combat rules (not Cry Havoc), but I've never heard great things about that particular version. From what I know of it, the CH mass combat system is far more complex than I'm likely to use. New spells...? Like classes, I have plenty already. The Psychic sounds good, and I don't already have that book, but why reprint material if it isn't revised or updated? If a revision wasn't needed, just point people to that other book... and if they were really interested, they probably have that book already, meaning the pages are wasted as duplicated material.
From what I've read here, I probably won't be buying this book, which is sad, as I was really looking forward to it when I first heard about it. I bought Unearthed Arcana and the S&S Advanced Players Guide, and enjoy them both, but this sounds like too much stuff I either don't need or wasn't interested in enough to buy the 1st time it was printed...