In Batman Beyond, as many know, we are introduced to Terry McGinnis, who dons the cowl and takes over as the Dark Knight many decades into the future.
Is the Batman Beyond series the furthest serialized future timeline point in the DC universe we’ve ever seen established in comics/films/series?
This does not count one-off timeline jumps due to other stories involving other heroes in other series. I’m referring to full-on serialized for the long-term.