June 17th, 2014! Whee!!
It is now on Amazon: http://www.amazon.com/Dark-Metropolis-Jaclyn-Dolamore/dp/142316332X/ref=sr_1_5?ie=UTF8&qid=1381272634&sr=8-5&keywords=jaclyn+dolamore
And in the publisher's catalog: http://edelweiss.abovethetreeline.com/ProductDetailPage.aspx?sequence=44&group=catalog&mailingID=0&mailingGroupID=0&catalogID=120359&org=&sku=142316332X (Which has a more involved synopsis and a wee excerpt.)
And I am told that ARCs will be printed soon. Although this is my fourth book, seeing these little signs of a book creeping out into the world are just as exciting as ever.