From the trailer we know that the construction of a device to allow for inter-dimensional exploration is a key plot of point of the film, and like in the Ultimate Fantastic Four comics, the use of this device has severe repercussions and gives the heroes (and villain(s)) to be their powers. Beyond that, we don’t know what this technology will be used for in the story or future Marvel movies by Fox. Kinberg would only say that the “characters go to another dimension” and that “it was something we discussed from our earliest conversations.”