Eternal Vigilance by Gabrielle Faust

"After a century of Sleep, Tynan Llywelyn has awoken to find the world he once knew utterly obliterated by a brutal war of epic proportions. In a new apocalyptic society, bitterly divided by magic and technology, the Tyst Empire has found that a hundred years of global domination is not enough to sate their thirst for power. They have discovered the secret of the vampire race and have designed a plan to seize their own sinister form of immortality with the help of an ancient vampiric god. The Phuree, a rebel uprising that has been engaged in a bloody war with the Tyst since the beginning of the new regime, have obtained the knowledge of Lord Cardone's plans and have allied themselves with the remaining Immortal clan. The powerful Phuree oracle, Nahalo, has had a vision that in Tynan alone lies the power to defeat the vampiric god and the dictatorship. Cast into the midst of a global war between magic and technology, mortals and vampires, in a new world he is still struggling to define, Tynan must make the harrowing decision to save the world he so bitterly detests or stand and watch as humanity is destroyed by a primordial evil beyond all imagining." (from Amazon.com)

Hardcover Info: ISBN 1904853536, Immanion Press, 2008