He's been saying that since 2009 when the first Star Trek came out. This passionate TED talk he did a few years back is one of my favorite times I've heard him (or anyone else, for that matter) talk about Star Wars. And I loved hearing him talk about film and mystery in general as well. That being said, just because he is passionate about Star Wars doesn't mean he is going to do it forever. He may know what he wants to do with Episode VII and then, like Lucas, pass it down to see the next person's take on the material.