Well I'm surprised that I haven't seen a thread for this movie yet so here it goes.
http://www.apple.com/trailers/wb/supermanreturns/
For windows media player:
http://american-toku.com/srtrailer.wmv
I'm not completely sure here but it looks like this is a sequale to the established Superman movies with Christopher Revies.
I was under the impression that they were restarting the series like they did with Batman Begins.