Now in the outline it states that: Events surrounding the calamity up to the seventh umbral era can only be seen by those of us playing in Eorzea today.

Does that mean that all content they have been developing thus far like Ifrit/Raid Dungeons and what not will be no longer existent in 2.0?

or does this just mean that the new story lines they are adding for this "calamity" will not be repeatable?