There was a leak on the Star Wars Fallen Empire site. It was promptly taken down, but not before an screenshot made it to Reddit.
It looks like a whole new game. Though I think they aren't getting rid of the old one, just starting from the top.
Depending on how they're counting content, they say they have nine chapters ready, and plans for at least seven more. The current game only has five chapters. Now, maybe each new chapter will be shorter, like one planet in length. Still that's a lot of content.
Also, they imply that the class stories are coming back. Though maybe that's just a reference to the 1-50 class stories.
Honestly, I don't know what to think of this. If this leak is true, EA/Bioware essentially decided to double down on SWTOR, and do what Square Enix did to FFXIV. I was not expecting that at all.
To be honest, the scope of the changes in this leak is rather unbelievable. It might just be Bioware excessively hyping a more normal set of changes or new content.