Originally Posted by
Valyrian the Moofia Boss
Last year, Disney separated the EU continuity from the film continuity, so it is unlikely it will happen.
As far as the film continuity is concerned, only the films, Clone Wars, and Rebels happened. Everything else didn't.
Given the way Disney has been moving forward with the film continuity, it seems like they are uninterested in developing any backstory pre-sequel trilogy, and only care about the plot after VI, which is supposedly original material.