The Ever Breath by Julianna Baggott was just released in the U.S.
Description: From the publisher: In a world where locust fairies flutter and firebreathers burst from snowbanks, two children are having the adventure of their lives. Truman and his twin sister, Camille, have just met their grandmother... and she's a little strange. She whispers a tale about something called the Ever Breath, an amber orb that maintains the balance between our world and a dreamy one of imagination - and evil. Soon Truman and Camille find themselves in the Breath World, a magical place where ogres clash and a mouse holds the key to a mystery. Some creatures want to help them - and some want them D-E-A-D. That's because the Ever Breath has been stolen, and an epic battle is raging to bring it safely back. Can the twins save not only one world - but two?
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