Welp, looks like there will no release of The Solomon Key in 2006. This just reported in The Bookseller:
Dan Brown’s much-anticipated next novel will not hit the shelves until 2007, more than a year later than his publishers had originally planned. Transworld m.d. Larry Finlay confirmed that Brown’s writing had been delayed by his involvment in the Tom Hanks film and the High Court trial. “[The book] is out of our schedules for this year,” he said. “I think and hope it’s going to appear in 2007.”
Guess the best thing to do in the meantime is read my book on The Solomon Key (*wink*).