God of War: Ascension will feature a new storyline, not after God of War III, but before the events of the latter.
"There was a time before Kratos became the monster known as the Ghost of Sparta," says the teaser's narrator. "A time when something other than rage consumed him. A time when, in spite of the madness that plagued him, Kratos would break his blood oath to an unjust god. A time when he would no longer be bound in blood."
I have been a God of War fan since 2005 with the first game, and let's see what happens soon. More updates on Ascension coming soon.
God Bless and Play Hard Gamers!