User blog comment:ADour/First The Amazing Spider-Man 2 trailer debuts!/@comment-1895174-20131205135931/@comment-3317214-20131207061847

Nah look, Fantastic Four could go back. The first two weren't the most successful of movies - critically or commercially. And it's been six years since the last one was released. The rumour I heard was that the rights would revert if production didn't start by "fall" (or, my spring) 2014. So, if that's true, and they don't start production within a year from now, the rights would revert.

Considering that it looks like they're making progress with it and there's a release date set for 2015, it's looking unlikely that the rights will revert, especially considering that they'll want to make the push to keep it. But the film doesn't have that many people attatched to it yet, and we haven't had much casting news since rumours about Michael B Jordan.

And what's more, they plan to put it in the X-Men universe, but the current release date puts it between two X-Men films that will probably have huge consequences on the timeline (as well as the general state of living perhaps...) that would be severely out of place in a Fantastic Four movie. It's certainly possible that it could revert. I'm not counting on it, but I sure hope it happens.