Devin fully admits that it could be intentionally leaked bs from Abrams. He only ran the story because he had multiple reliable sources backing it up. Even he's having a hard time believing it.
The story about Boyega's character is different, though. That's something he says is backed up by a very large number of sources.
Anyway, assuming the story premise leak is true, I'm glad they're justifying the jettisoning of the EU by going in a much different direction. No one's seen Luke in the 30 years since Endor? I fully expected Abrams to bring Mark into the movie Alec Guinness style, which of course is what he did with Leonard Nimoy in Star Trek 2009, but this 30 years thing gives it a more direct connection to the previous movie and washes away any kind of preconcieved notions from the EU.
Also, I think it's safe to say, from everything we've heard, that the Empire, stormtroopers etc are still around. One interesting rumor some guy posted in the comments section at badassdigest is that Ep7 finds the galaxy in a state of Cold War, with the Empire on one side and the Rebellion (New Republic?) on the other. There's no Galactic Government that forms in the books during the Vong invasion (although as I understand it the Galaxy just ends up collapsing into civil war yet again and blah blah blah). So, that's another interesting justification for jettisoning the post-RotJ EU, assuming it's true and not a rumor.
One last thing: the part about Han and Chewie flying around in a ship that's not the Falcon doesn't make sense since we know for a fact that they built a Falcon set. Unless of course they're bringing it into the movie in an unexpected way. Again, assuming any of this is true and not just fabricated.