Awwwww come on, it'll be fun.
But in all seriousness, we're lead to believe the Trinity War is the first "big event" of the NuDCU. So if they have plans for anything even bigger than this, we won't know till the end of the arc. All we really know is that Pandora, The Phantom Stranger and The Question (Possibly, not sure) play a large role in the context of the story arc and that it affects the Justice League and might possibly answer some questions about the bridge between pre-Flashpoint DCU and the Nu52.