Well, we thought this might be coming. And it has. The Free Comic Book Day title from DC COmics, Divergence, gives three ways that the big DC comics will be changing. We see the new Batman – and an idea of what may have happened to the old one. We see Darkseid's daughter and how her history is tied up with that of Wonder Woman. And we see exactly what has happened in Superman's life to change it so.
Spoilers, obviously. Because Superman is having to deal with a very different world. We know that he revealed his identity to Jimmy Olsen. Well, it seems that someone else, at least, just can't keep a secret.
Not a hoax, not a dream, not an imaginary story.