Brisingr, the third book in the now four book Inheritance Cycle, was officially named on January 16th, 2007, after months of fan speculation. The book releases on Saturday, September 20th, 2008 at 12:01 AM in the United States.
What We Know
"... a few chapters into Book 3, when Eragon and Roran have attacked Helgrind - where the Ra'zac are - ... Eragon encounters a moral quandary..." "The challenge I faced then was to find an appropriate ending point for the third book - something that was dramatic and satisfying and wrapped up the third book in a good way and lead into the fourth book appropriately - you know, not just a cliffhanger. ... And I realized that since I started Eldest with the death of a major character, Ajihad, that a great way to end the third book would be with the death of another major character..." (Both quotes are from Christopher Paolini's Inheritance Cycle video announcement)