In the final scene of The Dark Knight Rises we see Bruce sitting at the table with a brunette.
Is this woman Selina Kyle or is it someone he's met in his new life?
It is definitely Selina Kyle, never thought it could be someone else (and have never heard anybody not referring to her being Selina Kyle). Yet that particular screenshot is indeed a bit vague, but together with the fact that due to the story's development she is most probable to be Selina Kyle it still bears enough resemblence to Anne Hathaway to be quite sure.
And in fact the movie's script agrees with me:
EXT. CAFÉ, FLORENCE - DAY
Alfred folds his paper. Pulls out his money, then stops, seeing...across the tables, a familiar couple... Bruce smiles at Alfred, who nods. Bruce turns back to the pretty brunette in pearls. Selina. Alfred pays his bill, content.