It's not, right? It's just SE's way of hyping far-off changes to server structure/addition of content/ui/map design/etc. But the basic classes we have now prior to the release of whm/blm/drg/pld/etc, and characters we're working on, and the present storyline, and all that - it's staying around?

I'm pretty sure that's the way of it from my reading the notes, but want to be certain. If SE wants to charge me a small fee to go on having fun for the next year or two, I'm ok with that. But if they're planning on charging me for a year or two, and then bringing out a radically redone game where all I've done previously suddenly comes to very little or nothing.... then I'm not so ok with it and would rather find other uses for my free time.