The Borrowers series does not have a new book coming out soon. The latest book, The Borrowers Avenged (Book 5), was published in November 1982.
The first book in the Borrowers series, The Borrowers, was published in October 1953.
The Borrowers 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.