There are 3 books in the Upchuck and the Rotten Willy series.
The Upchuck and the Rotten Willy series does not have a new book coming out soon. The latest book, Running Wild (Book 3), was published in October 2000.
The first book in the Upchuck and the Rotten Willy series, Upchuck and the Rotten Willy, was published in February 1998.
The Upchuck and the Rotten Willy series primarily falls into the General Fiction genre. This chapter book series was written for ages 7-10, but some older readers may still like to read these books.