Yeah, modern age is definitely over, I think. Antique dealers consider the modern age to have ended in the early 60's, I believe. Weirdly. Not sure what we're in now!
Rose and I were talking about it and decided a "change of age" could definitely be said to have happened recently, perhaps in the early 2000s. I don't know what that would make the period from 1985-2000. I suppose an argument could be made for calling it the "Dark Age", since the publication of "Batman: The Dark Knight Returns" in 1985 is counted as one of the starting points of that Age, and one of the hallmarks of the comics published during that time was the rise of "grim and gritty" characters and plots.
Believe it or not the term is Postmodern.
Maybe not so much with comic books. But what do ~I~ know?