Only if they choose to change some things around after the success of the Avengers but at the moment they still seem to be sticking that they want all of them seperate.
In Green Lantern we heard that this was the first alien that they'd seen so its likely Superman wasnt around (best way around that would be just having Superman not admit he's an alien yet). They dont have enough licenses out there yet that we can really speculate. The stupid thing is that as they're all under Warner Brothers a Justice League movie should be much easier for them than it was for Marvel.
Either way though, im actually a bit bored of DC now. Ever since I realised I wasnt enjoing the DCnU that much and more forcing myself to think I was I just cant be arsed with a lot of their stuff. As I mentioned in the Batman thread ive got no excitement at all for that movie and ive seen nothing so far that makes me look forward to Superman either.