Post credit scene for Dark Knight rises?

Marvel is known for their little easter eggs at the end of their movies, which can either be used to hint for the next movie or just for fun, and fans really appreciate these little post credits.


With The Dark Knight rises coming to theaters and all, speculation about whether the movie will involve a post credit scene has now arisen. 
Warner Brothers has been teasing us for months,  making us wonder: will the legendary Dark Knight die, or will a replacement rise?


Different ideas about what the post credit scene has been thought up and some of them seem rather likely.


Here are some ideas:


THESE IDEAS MAY INCLUDE SPOILERS!!!


THE SECOND DARK KNIGHT... RISES?

Rumor has it that John Blake (Joseph Gordon-Levitt) is to replace Batman, if he were to die or take the fall. Batman may live and Bruce Wayne may fall; but this may be the other way around...


I think that the post credit scene may include the new Batman just looking over Gotham from above, maybe listening to a police radio link with them explaining the characteristics of some sort of new villain.











HINT OF A NEW VILLAIN ON THE HORIZON

    If there is to be a second Batman, then they can't just be the same villains over and over again; fans would want something fresh (even if this is going to be the last movie of the saga). 
Villains which haven't appeared in any of the movies such as Killer Croc or maybe Black Mask or Mr. Freeze. These would be a good choice if Christopher Nolan were to make the character as grounded as possible.  

The Man of Steel hints? 

At the end of the movie they might just include the trailer for The Man of Steel.

This is another movie of Christopher Nolan's and I don't believe that this will be as bad as people say.