I want to find Dark Eidolons

I've obtain the Odin Materia and want to find Dark Eidolons... I found book about "Information : Dark Eidolons"

The book says : "Have you possibly felt this too? This... Feeling... it can only be the legendary Dark Eidolons. The legend says they were created as copies from the real Eidolon, but Empowered by darkness. Only the Divine Eidolon could not be caught and copied. If this is true, there are Dark Eidolons emprisoned in the parallel Gaya, about to reach Gaya. They must be stopped. But beware; they are extremely powerful, much stronger than their creator had intended!"

I think i must use Gaya to find the Dark Eidolons
Interested to find Dark Eidolons with me?

I'm sorry to dissapoint you but you can't find them cause they're not there. They will be in the next version.

where the F did you find that in this version

unless you have traveled to the future, then perhaps you know of this that exist in this version... we are still standing by for the next version... then your ideas shall be discussed