Will Eureka last?

[Malzian]

So here's the thing many people are forgetting about Eureka in regards to the Anemos gear... Eureka Anemos is just the first instance in a larger concept that is Eureka. From the way it was described, for the next part of the gear you may not actually be going back into Eureka Anemos, but an entirely different Eureka zone with different mobs and NMs. This means that the Anemos region will slowly die as people move on to the new zone, but they will tweak Anemos and nerf the reqs as that happens.

This means that Eureka, itself, will likely be with us for the whole 4.x series, but it won't be the same exact zone for every set of steps. Remember, they've already teased the tower and a further underlying story around Eureka that they're going to expand on. From the way the map is laid out now it's unlikely they can do that within the confines of the current zone.