Will 'The Dark Knight' eventually become the top grossing movie in all-time Hollywood history?

On sunday the Dark Night became the second movie in the history of Hollywood to top $500,000,000 at the box office. Warner Brothers estimate that it reached about $502.4 million. The #1 grossing move of all time was ofcourse, Titanic which reached $500,000,000 in just about three months and topped off at $600.8 million.