That was theorized on how she could have survived when we just saw her body floating in space, then next issue she was listed as "Confirmed Dead" when Jo was going through reports
I guess that's kind of what I'm hoping for. John uses his powers to revive and restore everybody's rings. I guess that means Jessica would also be going back to Green then as I can't think of why she'd stay yellow once the GL powers are running again. I'm wondering if then this would have been planned from the start or a ressurrection/repowering would be in response to low sales of the title so far. Of course this is assuming they're undoing at least some of the kill off.
It's possible that giving up his god powers could be a trade off for pressing the reset button and bringing everyone back.Maybe John will decide not to be a "god" or whatever. Then again, if that would happen...what would be the point of the whole story of this current run? Or half the story, at least? Then again, I don't know if I actually expect these comics to do common sense type of things, so who knows