There are 3 books in The Kingdom of Northumbria series.
The Kingdom of Northumbria series does not have a new book coming out soon. The latest book, Lord of the North Wind (Book 3), was published in October 2018.
The first book in The Kingdom of Northumbria series, The Whispering Wind, was published in January 2017.
The Kingdom of Northumbria series primarily falls into the Historical Romance genre.