The Fire-Us Trilogy series does not have a new book coming out soon. The latest book, The Kiln (Book 3), was published in April 2003.
The first book in The Fire-Us Trilogy series, Kindling, was published in April 2002.
The Fire-Us Trilogy series primarily falls into the Fantasy genre. This young adult series was written for ages 12-17, but can be enjoyed by adults too.