The Star Ka'at series does not have a new book coming out soon. The latest book, Star Ka'Ats and the Plant People (Book 3), was published in February 1979.
The first book in the Star Ka'at series, Star Ka'at, was published in January 1976.
The Star Ka'at 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.