Dylan here and "Avatar: The Last Airbender (The Art of the Animated Series)" is set to be released on June 2nd! Here's the product description that was released:

"Since its debut in 2005, Avatar: The Last Airbender has been one of Nickelodeon's most talked about and highest-rated animated series. Offering an epic storyline, engaging characters, action, adventure, and a powerful message about the importance of hope in a world besieged by war, it is also beautifully executed, harmonizing Western influences with aesthetic inspiration drawn from a diverse array of cultures, including those of China, Japan, India, and the Inuit. An unprecedented look at the concept, design, and production art behind this smash-hit, award-winning series, Avatar: The Last Airbender - The Art of the Animated Series features hundreds of images, most of which Nickelodeon has never released to the public, and chronicles the show's development - from the very first sketch through to the series finale and beyond! With extensive commentary from series creators Bryan Konietzko and Michael Dante DiMartino"

The book will be 184 pages and you can pre-order it on Amazon for $23.37 now! (Thanks to Momo4Life for the heads up!)