Razor's Edge was first published back in 2003; it was the third book in the series, and the start of a period where we were publishing two Dreamland installments a year. I don't know about Dale, but I know I was blown away by the response of readers.
It was an exciting if ultimately exhausting time. The pace now is a little easier to keep - I wish I could write as fast as a lot of people read.
The book moved up to 20 on the Nook best-seller list when the special debuted this week. I hope everyone likes it. Hopefully they'll enjoy some other installments as well.
One thing I should note for readers new to the series - the timeline of the Dreamland books before Dreamland: Whiplash is set in the 1990s. It was always conceived as a (slightly) alternate universe.
P.S.: Amazon has a special of its own for the Kindle.