It isn’t exactly the New York Times bestseller list (yet!), but my publisher’s recent decision to push back the e-book release of Bran Hambric: The Farfield Curse has been causing a lot of buzz this week. The Wall Street Journal was the first to report: In an interview, Sourcebooks’ chief executive said it will delay by at least half a year the e-book version of “Bran Hambric: The Farfield Curse,” a young-readers title in the vein of Harry Potter that goes on sale Sept. 9.…