@Temporal Flux there are two different periods of time being explored in the relaunch continuity. The first arc of Action Comics (perhaps the first year) focuses in on the Five Years Ago past story line, as does the first arc of Justice League where we see how the members all meet each other. The rest of the books will be taking place in the present time of the continuity. Also the Legion of Superheroes books are not the only books from the previous books, the Bat-Family books also are intact, as is Batman, Inc when it returns. Also the present time Green Lantern books have characters and elements that have carried over.