From the Kickstarter page:

4 AR - Original Sin

Sadly I must confess that once more my knowledge about these long forgotten times is diminutive at best. Very little is known about the strange and spectacular events that befell two so-called Source Hunters. Nevertheless, if one can put faith in the fragmented stories told by old wizards, they both prevented and set in motion events that changed the destiny of fair Rivellon herself.

I'd sell my soul to know more, but those damned mages are so damnably reticent! Zandalor knows all, of that I am sure, but not even two carafes of spiced elven wine stir his tongue to speak of what happened back then. Something must have! Shortly after, we even changed the way we count time! AR to AD ... Was it truly just to honour the gods?
The history of this world; I swear more of it is secret than is known.

http://www.youtube.com/watch?feature=player_embedded&v=bS3xK8jqjaw#!

But thats not much. we will have to wait.But i think the Lord of Chaos may be part of this game.