Not sure how accurate all this is, but FusionX has been my main source of info for a while now, so I think he's dead on. But I am one of those who doesn't know all the lore or meaning behind a lot of stuff going on because I joined pretty much right before FFXIV Armageddon, so here's a good video explaining the story and what we will be going into for 2.0 Launch.

http://www.youtube.com/watch?feature...&v=n-uzttqjRkM