James Cameron has confirmed he is bringing back his hit film Titanic to cinemas - but this time it will be in 3D.The director plans to raise the 1997 Oscar-winning film in spring 2012 to mark the 100th anniversary of the sailing of the ship.The movie, starring Leonardo DiCaprio and Kate Winslet, was the highest grossing film of all time until it was overtaken by Cameron's latest epic Avatar.Cameron is warning the effects will not be as spectacular as Avatar: "It's never going to look as good as if you shot it in 3D. But think of it as a sort of 2.8D".Not content with re-releasing Titanic, Cameron is also considering getting Avatar out for a second run as well.The film has already made billions of dollars worldwide but Cameron believes there is still more cash to be made."It's kind of gotten stomped out (of cinemas) because of Alice in Wonderland," he said."The word we're getting back from exhibitors is we probably left a couple of hundred million dollars on the table as a result."The director is thinking about re-releasing Avatar this autumn, possibly with new footage.Cameron, though admits audiences may not want to see a 10-month-old film."The question is (whether) the appetite is still going to be there after the summer glut of movies," Cameron added."We're going to assess that. We're talking about maybe adding in additional footage and doing something creative."Source: Skynews