The First Imperium is now available on Amazon, Barnes and Noble, and Smashwords. It should be live shortly on Apple and Kobo.
First Imperium at Amazon
First Imperium at BN.com
First Imperium at Smashwords
I'll be sending out some info in a few days on Book 5 (The Line Must Hold) as well as some other upcoming things.
I hope you all enjoy the book.