The Goblin Wars series does not have a new book coming out soon. The latest book, When the Stars Threw Down Their Spears (Book 3), was published in August 2013.
The first book in The Goblin Wars series, Tyger Tyger, was published in September 2011.
The Goblin Wars series primarily falls into the Action Adventure and Fantasy genres. This young adult series was written for ages 12-17, but can be enjoyed by adults too.