About the same correlation you'll find between the Farmer's Almanac (published several months in advance) and your local "Accu Weather" forecast. Ken Bressett would be disappointed to hear that. Like the Red Book, the Blue Book is published every year. The Official Blue Book Handbook of United States Coins 2010 (Handbook of United States Coins
I strongly recommend that you don't use the Red Book nor Blue Book for valuing coin. The Red Book is great starting point for background and history (don't know about the Blue Book). But as for value of coins they are only good for relative worth, i.e., Coin X is worth twice as much as Coin Y.