Apparently, Christopher Nolan is helping mentor the next Superman movie. Now, I'm still among the three people who really liked "Superman Returns," and I'm a little disappointed to have a reboot, but I can accept "SR" as a coda to the Donner/Reeve universe if it means having a Nolan-quality flick in the near future (and hopefully a Justice League movie thereafter).
Overall, this can only be good news for Superman, because I can't think of anyone I'd blindly trust with a superhero film more than Christopher Nolan. A movie like "The Dark Knight" gets you a lot of capital in my book. It also gives me hope that the "darker/edgier" talk that keeps getting bandied about the Superman films won't be handled in the wrong way, since those are words I don't think associate well with Superman.
I think it's way too early to speculate on plot or theme or tone, but I think they'd do well to take some hints from All-Star Superman (address the origin quickly, if at all; stick to big sweeping events and grand ideas). Obviously, it's going to need a little bit more conventional superhero action. To that end, I've been thinking that you could build a whole movie around Luthor and Metallo as the villains, while setting things up for an eventual sequel with a Johns-esque Brainiac. I don't think it's controversial to say that the biggest problem with Superman movies has been their general aversion to typical superhero stories, and I trust a Nolan-helmed team to understand that.
Regardless, I'm excited, and I hope this all pans out. The DC movieverse(s) shouldn't be without the Man of Steel.