So I haven't actually read any DC Comics since the major reboot into the New 52, but I heard something very interesting. Apparently the Superman from the Pre-New-52 comics (New Earth) found his way into the New-52 universe (Prime Earth).

Can anyone tell me what specific comics this happened in, and how long it occurred in? Are there any other New Earth characters having their stories be told, or are we back to that being basically done for the time being.