[GreenLantern]

It appears as though Batman/Superman IS Man of Steel 2..

Also that logo is fan made.

SUPERMAN/BATMAN
Indeed, it has been confirmed: Zack Snyder announced "Man of Steel 2" during Comic-Con International and its concept: "Superman/Batman." Warner Bros. was also expected to announce a "Justice League" or "Flash" film, though those titles ultimately did not see any movement during CCI. Unfortunately, no other details were given, though a fan-made logo has already started making the rounds.

http://www.comicbookresources.com/?p...ticle&id=46848