Our friends over at Jedi News have seem to gather a rumor regarding Adam Drivers character for Star Wars: Episode VII:
Sounds like Adam Driver is NOT going to play a villain…sort of.
He will be playing the son of Han and Leia, and it seems he will be seduced to the Dark Side, and a main plot point for the movie will be their attempt to rescue him.
Sounds to me like a Jacen Solo type, and if this is true it would most certainly stir up the EU world again. But theres not really much to really go off of from this, but like Jedi News said this is only a rumor until confirmed otherwise.