It's official now. Apparently it draws inspiration from Frank Miller's The Dark Knight Returns.
Henry Cavill returns, as does David S. Goyer.
Nolan is an executive producer.
http://img707.imageshack.us/img707/1870/5fzv.jpg
Karol
It seems they were not pleased with Returns, and want to do a reboot. Will this mean we can kiss Williams' heroic march goodbye forever? Or will they not be able to sepparate it from Superman? Source