The new version of the Oscar-winning film will arrive in theaters on April 6 next year, said the Hollywood Reporter.
Eight scenes were screened so far, including footage of Jack Dawson (Leonardo DiCaprio) and Rose DeWitt Bukater's (Kate Winslet) encounter on the Titantic's grand stairwell, their kiss on the bow of the ship and its sinking.
"There are certain films that aren't being brought back to the theater. There is a whole generation of people who haven't seen it at all," Cameron said.
The 1997 disaster epic is being converted into 3D at a cost of USD 18 million and the process, which is ongoing, is expected to take 60 weeks.
Titantic grossed USD 1.84 billion worldwide and won 11 Oscars, including those for best picture and best director.
It is the second highest grossing film of all time, behind Cameron's own Avatar, which grossed nearly double that amount.
Cameron also said that while he is typically very much against converting traditional films into 3D, he believes the conversion enriches the film.
"I totally believe 3D is an enhancement for the dramatic scenes not just the big action," he added.
The director said that there would be no changes to the content of the film.
