A very tiny G1 Firefly in her original pose (dubbed 'Firefly Pose' in her honor!) with an even tinier brush. The details of the book are still unknown. Right now it is simply a small book titled "My Little Pony" with a vector of Firefly's symbol.
You can still preorder the set on Amazon for $6.29. Expected release date is April 22, 2014.
(via Equestria Daily)