The goal is to have the second book, Arbiter, written by December 2015. I just finished a section of chapter 20 this morning!
I've had a couple setbacks including the birth of our first kiddo and a car wreck I shouldn't have walked away from (http://jamiesfoley.com/2014/09/i-shou...), but I'm doing my best to write quickly without sacrificing quality. I'm kind of paranoid about making Arbiter super awesome, especially since most sequels just kind of suck.
The beta-reading and editing process normally takes about a month, and creating the actual paperback takes another, so you can expect to see the Kindle version out in January 2015 and the paperback in February 2015.
The latest news is available on my monthly email list at http://jamiesfoley.com/contact/ as well as giveaways, behind-the-scenes goodies, and possibly fire-spitting unicorns. Hey, it could happen.