The Alien Agent series does not have a new book coming out soon. The latest book, Alien Envoy (Book 6), was published in April 2011.
The first book in the Alien Agent series, My Cousin, the Alien, was published in September 2009.
The Alien Agent series primarily falls into the Science Fiction genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.