What I understand about FFXIV 1.0 is that, in SE eyes, it was a failure. So they decided to wipe the slate clean and start over. They also did this with the in game story of 1.0. I would recommend checking out http://gamerescape.com/2013/08/21/th...e-white-raven/ plus an in-game video of the final hour of "The End of Erozea" ( http://www.youtube.com/watch?v=TzLUASTdV5g start at 18 mins).

So my answer to you is no. They are not going to wipe everything out and start a new. Currently the games story is in an Astral Era (an era of good blessing), so what I gather were going to see in the next expansion is a new localized enemy similar to the Empire. Right now we are just running around establishing ourselves as the defenders of the realm, so in the coming patch a larger force (Possible SPOILER (Watch out, watch out! don't look ahead)): possibly Omega Weapon brought by that wealthy dude from Ul'Dah). But, time will only tell.