The Interview with Chris Metzen has him describing how Malfurion Stormrage is a large part of this book and how the book is basically a "hyper druid overload". A must read book for any Druid player in wow... He states how he was waited for a long time to be able to do anything with Malfurion Stormrage, who is his favourite character in the Warcraft universe. Sounds like it might be worth a read or five.
The bit I really am looking forward to seeing is what he has been doing in the last 6 years!? Its incredible to think that the main character of a "story" has not been around for such a long period of time. I hope when he arrives in Cataclysm they make it a big thing. I read a small snippet of the book that I found online and it involves quite a few names that appear from Goldshire and elsewhere. 1 month to go, I simply cannot wait.