Well, there's been some sort of allusion towards Jason Todd (though incredibly vague). And Diana is flying off with Dinah Green Lantern and Cyborg in tow, wielding a Kryptonite sword.
Though honestly, not really fond of this sort of thing. An apocalyptic world and things, just when a glimmer of hope seems to appear, get very much worse. Its why I don't watch things like Walking Dead and dropped Vampire Earth novel series.