The Shades of London series does not have a new book coming out soon. The latest book, The Shadow Cabinet (Book 3), was published in February 2015.
The first book in the Shades of London series, The Name of the Star, was published in October 2011.
The Shades of London series primarily falls into the Paranormal Mystery genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.