This is canon. Not an Elseworlds. Not a dream. As of Justice League #12 Superman and Wonder Woman are together. EW has the story:
Writer Geoff Johns hints that some event — possibly tragic — will impact every member of the Justice League, and cause Superman and Wonder Woman to seek solace in each other and move from super-powered colleagues to power couple. This is no one-issue stunt: “This is the new status quo,” says Johns, adding that the relationship will have a seismic impact on all the heroes and villains in the DC universe.
“The new status quo”. Now you know why they ditched the super marriage.
I have some thoughts on this. But they will come later.
They will not be pleasant.
You wanna know why Marvel always kicks your ass, DC? Do you really want to know?
at first glance i read this as ‘Superwoman and Wonder Woman…’ i was like woo!! lesbian superheroes!! and then i re-read it and was like: =/