The next big trend in home entertainment will be virtual reality. The technology is already in place for entertainment that places the viewer inside the action, allowing them to look around the world of the film, as though they are present at events as they occur. Some VR stories will include the viewer as a character, but many will simply place them in the scene, a ghostly viewer.
This technology will prove so popular that older films will be adapted to VR. You will be able to stand on the deck of the Titanic as it sinks, or plummet to the earth with King Kong, or fly through space in the Millennium Falcon. This will be possible through complex, computerized post conversions that literally build the world of the film around the filmed image, and it will be so convincing as to seem like the film was originally made for VR.