From newsarama:
In regards to continuity, Didio said, "We don't want continuity to drive the stories, we want the stories to drive the continuity," adding that if the particular story doesn't work within the particular continuity, DC would rather push the continuity aside ffor the moment until they can come up with something better and get it right. Didio also added that, despite what some fans may see as multiple continuity streams within the DCU, there will be no Zero Hour or Crisis.