The Grail Quest series does not have a new book coming out soon. The latest book, The Shadow Companion (Book 3), was published in November 2006.
The first book in the Grail Quest series, The Camelot Spell, was published in February 2006.
The Grail Quest 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.