Um, yeah, the title about sums it up. I just finished Undead, and was surprised to see the cerulian storm be a large part of the story. What other books can we expect it to turn up in. Just Forgotten Realms books? How about Eberron?
Hmm based on what I recall, spell plague is a Realms specific event that will not show up in novels (at least as a main theme, there clearly can be references to back in those days, like we saw in _The Orc King_). This of course subject to change and I am not reading every official statement any more. What I do recall from what I have read, Eberron is not effected by this event. That does not mean there might be changes, however odds appear lower of major world changing because Eberron has a lot less lore to be effected.
All in all, however the only time you will get a true answer is when it is printed, WotC announced plans have been revised so until final copy is released one can not be fully sure what will be.