STAR WARS: EPISODE VII - Leaked Story Details?

We've got some possible story details for J.J. Abram's Star Wars: Episode VII. The information comes from SchmoesKnow.com, and according to them, this comes straight from Abrams himself. The brief breakdown gives us some info on the main characters and the role Luke Skywalker plays in the story. I'm going to go ahead and throw out a SPOILER ALERT just in case this turns out to be true. There's no confirmation that this is accurate, but it seems like it's in line with the stuff I've been hearing. 

So if you want to know what they had to reveal scroll down a bit:

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Star Wars: Episode VII 

Storyline: Two 17 year old twins, a girl and a boy, are trained by their uncle Luke to be the greatest Jedi’s in the galaxy. Problems arise when the male twin turns to the dark side. 

Jaina Solo – Female, 17 years old, lead. – Jacen’s twin sister, one of the greatest Jedis in the galaxy, trained by her uncle Luke Skywalker 

Jacen Solo – Male, 17 years old, lead – Jaina’s twin brother, one of the greatest Jedis in the world. A loner who is constantly struggling with the idea of what’s right and what’s wrong. Starts to turn to the dark side. Full of conviction that what he is doing is the “right thing”. Will eventually become Darth Caedus.

So the story will focus on Han Solo and Princess Leia's kids, and I could see this setting the stage for the future Star Wars films. I guess when you train kids to be Jedis you always take the chance that one of them will go bad. Did Luke not tell them about where the dark side led his dad? 

What are your thoughts on these story details, and do you think they could be real?