I mean, talks about cameos are as good as anything at the moment. He had a contract for one more film, and even that wasn’t a certainty and was delayed. So I’d rather there be momentum for the character than there being a deal, if that makes any sense. It means relationships are intact and emotions are cooling a bit.
On a personal note, can we please stop calling it MAN OF STEEL 2?
I think there remains the possibility that any Superman "solo film" would involve a team up element or at least cameos from other heroes in it. They’re positioning him as one of the founders/mentors in the DCEU. Don’t think that’s an accident, or that the angle would be wasted.
JJ’s involvement in any Superman sequel/reboot seems likely. And he wouldn’t need to make a great Superman movie for it to be well received, just a good one. If the next director gets Superman and his world right, people are going to give them some leeway on the quality of the film itself.