Eureka is not here for sure. They've said the same thing about it appearing in 4.25 as they said about it appearing in 4.15 (it is aiming for release in 4.25). Only we now have concept art and a tad more information about it. And currently... I've yet to see how it's any different then the Diadem with a PotD stat growth mechanic slapped on top of it. We still havn't seen any gameplay of it. So I'm not holding my breath. SE has said that they're going to be showing more information about it at Live Letter 41, but until then... nope... not expecting anything. As it is, I am disappointed that we won't be able to progress a Relic weapon/armor in the normal game itself (no more leveling other classes while tombestone grinding for relics), so it might turn out to be more trouble then it's worth anyway.

Long story short, SE has been heavily favoring the raiding community so far and I don't see that stopping.