I had the pleasure to meet Gary yesterday at the NAMM show. What a nice man he is. He even gave me a very cool GPO t-shirt! I also met Haydn and got a brief demo of the new jazz band library. From what I heard I am very impressed with it. The demos available were very abbreviated, but show remarkable potential.
I'm definitely looking forward to the GPO Advanced library as well as the new solo Strad package.