It is going to be a real team up movie, guys. They wouldn't talking about notbeing sure of calling it "Batman vs. Superman" or "Superman vs. Batman", like Goyer proclaimed on the Superman anniversary panel, if it would only be a cameo. And they wouldn't announce it years in advance.
Its a real team up, like Avengers.
The main thing I hope for the movie is that they film most of Batmans action scenes in a practical way, on real locations, like Nolan did, because that is the problem with Superman movies... You don't get many practical action scenes. Don't get me wrong,I loved MoS action scenes and they couldn'tdo them practical, but having Batman in there could balance the CGI action really well with some nice real world stuff.
I am pumped about this! This is my Star Wars sequels announcement moment! I dreamed about this movie since I was little and now I will get it, made by the team that just did my favorite Superman movie AND the Dark Knight Trilogy. Couldn't be happier. I hope they start soon. I need my spypics fix fast!