The Juliet Stone series does not have a new book coming out soon. The latest book, The Case of the Glacier Park Swallow (Book 2), was published in June 1994.
The first book in the Juliet Stone series, The Case of the Grand Canyon Eagle, was published in September 1994.
The Juliet Stone series primarily falls into the Mystery genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.