The Wormling series does not have a new book coming out soon. The latest book, The Author's Blood (Book 5), was published in January 2008.
The first book in The Wormling series, The Book of the King, was published in September 2007.
The Wormling series primarily falls into the Christian Fantasy genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.