There are 4 books in the Travels of da Vinci series.
The Travels of da Vinci series does not have a new book coming out soon. The latest book, Leonardo: A Return to Florence (Book 4), was published in January 2014.
The first book in the Travels of da Vinci series, Leonardo the Florentine, was published in October 2010.
The Travels of da Vinci series primarily falls into the General Fiction genre.