I don’t think that Titanic would get a teal tint to it, it was mastered at 4K and Dolby Vision so I don’t think it’ll ever get a teal color grade
The standard 1080p Blu-ray already has a teal tint compared to the original DVD release. The colors were altered for the 3D release in 2012.
Uh yeah exactly it already happened.
Except the 3D release only happened for The Phantom Menace.