At the DC Rebirth launch, DC Comics announced two books Super Sons and Justice League Of America. But there has been no sign of them since.

Could these be the Mystic U and Dark Universe of the DC Rebirth? Maybe not.

In an interview with ICV2



with DC Entertainment co-publishers Dan DiDio and Jim Lee, DiDio gave an update

One of the things that's strange is we were planning #1s through September and possibly into October, but the relaunch was so strong at the beginning that we actually delayed some of the later books into next year to give them more time to spend, to build them creatively, but also we didn't feel the urgency. We wanted to make sure we didn't overwhelm the fan base right from the start with so many titles that we decided to delay some of the material. So we made slight adjustment on our schedule so books like Justice League America and Super Sons that we announced for later this year are moving into 2017.

Slipped info indicated that Super Sons was by Chris Burns, Dennis Culver and Jorge Jimenez. Justice League Of America has an unknown creative cast.