The Fairie Ring series does not have a new book coming out soon. The latest book, Shadow Kiss (Book 4), was published in May 2001.
The first book in the Fairie Ring series, The Trouble with an Elf, was published in June 2003.
The Fairie Ring series primarily falls into the Fantasy genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.