Originally Posted by BatLobsterRises
IMO the reason this is being debated and the reason the movie (and Nolan himself, actually) does not cleanly state "Batman has been retired since the night Dent died" is to streamline the story for the audience and not present too convoluted a backstory, without infringing upon the imaginations of people who'd like to believe Batman might have stayed quietly active for a short period after.
A line like "the last confirmed sighting" remains ambiguous to me in nature.
Which is probably Nolans way of not getting pinned down or alienating segments of fan boys. It's kinda why I was saying this film causes so much debate as there are lot of things unclear. My opinion is he retired after dents death. I don't like it, but that's the way they laid it out. If not, I just need to hear one line of dialogue from anyone saying batman was out and about.