In Deep Wish by B.E. Sanderson
I won an ARC for "In Deep Wish" and I've had trouble putting it down since it arrived!
It's a fun, fast-paced urban fantasy with lots of surprises. And it's not your usual urban fantasy. Jo is a genie with a mission to save her fellow djinn, who have been enslaved for eons. But the "Rules" interfere with her success -- and even with her very survival.
It's the second in this great series, and I can hardly wait for the third one to become available.