The Judy Bolton series does not have a new book coming out soon. The latest book, The Hidden Clue (Book 35), was published in August 2008.
The first book in the Judy Bolton series, The Vanishing Shadow, was published in August 1983.
The Judy Bolton series primarily falls into the General Fiction genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.