Episode VII Will Be an Original Story.

According to an eonline source the next trilogy will be based on an original story. Many fans still had hope that they'll see their favorite novel "Thrawn Trilogy" on the big screen but considering the aged cast this news does make sense.

In other words, forget the Star Wars novels. Forget the graphic novels. Forget everything you think you know about what happens to Luke Skywalker. According to my sources, Episode 7 will literally be nothing you've ever seen or read before from the Star Wars universe.
I also hear from several sources that, no matter what you may hear to the contrary, no director has been officially attached to the project.

Source: eonline.com