it only makes sense that whatever will happen will happen in 7 days.
Not because of the prophecy, but simply because it gives time to build the hype, and it's better for the "event" to happen on a week end, so that more people gets to enjoy it.
Z'llayan: Fools being named by others as the newly come Archons have been heard spouting nonsense about the end of the world. Pay them and their empty words no heed.
Edit: now there's a green NPC dot in the minimap right where the big floating eggs are, no visible NPC or selectable anything though.