So you are in tune to the super hero hype? Down with the latest? Then you know Chris Nolan, director of the rebooted Batman franchise doesn't want Batman to have any meeting, let alone awareness of Superman's existence. This is in spite of the fact in the DC world these two characters know each other quite well.
So what is Chris's problem? Well, as he sees it, if Batman knew Superman existed, he'd have no purpose or meaning as he will understand he is not really a super hero. Chris says, "-- we didn’t address it directly in the film, but we did take the position philosophically -- that superheroes simply don’t exist. If they did, if Bruce knew of Superman or even of comic books, then that’s a completely different decision that he’s making when he puts on a costume in an attempt to become a symbol. It’s a paradox and a conundrum, but what we did is go back to the very original concept and idea of the character. In his first appearances, he invents himself as a totally original creation."
So don't expect any Marvel type endings with the next Batman installment where Wonder Woman or Green Lantern approach Bruce Wayne for a team up. In fact Christopher Nolan takes on that question directly with this quote: "I don’t think our Batman, our Gotham, lends itself to that kind of cross-fertilization. "
To emphasize Chris's point, College Humor has created this great short based on Batman bumping into not just Superman, but Justice League super heroes. Real super heroes. Check it out.