HOLY CRACKERS. HOW HAVE I NOT SEEN THIS?!
Um...That's supposed to be Meghan Chase's younger brother? Wow. He did some growin' up! (hahaha)
The Lost Prince by Julie Kagawa (Iron Fey: Call of the Forgotten, #1)
Releases: October 23, 2012
Description (will update once a better one becomes available):
"Set several years after the events of the first, this trilogy will star an older Ethan Chase, Meghan's brother."
That's it. But you can read chapter one of The Lost Prince in the back of Kagawa's awesome, The Immortal Rules (which I just finished).