We have no idea. Bendis apparently said there are plans, but Bendis says a lot of thing and not every project is made. He even joked than his Legion will continued with the Future State as the starting status quo. Still could happen, but I would pass of that possibility.
At this point I would prefer an Earth One OGN than a new series. The zeitgeist is lost and this was a lost chance to built something memorable, aside of the fact than if this has been cancelled and nobody want to revive them, this will be the shortest reboot of all. A merit of his own.
If that happens, better to put on the writting someone who can make a coral cast and be a good world builder. And who can keep a coherent storytelling and not change his own continuity. And I mean the contradiction of Element Lad and the tromites being villians in FS when it was stablished than he was the last of his own species.