The complete proceedings are
here. I recently streamed some of the audio on a long ride. Interesting, but for a non-hardcore film it became too much muchness.
The "40 Years of Star Wars Panel" is probably of most interest. Lucas says "I'm not supposed to say this, but this was a film for 12-year-olds. You're about the enter the world. You're 12 years old. You're going to go on into the big world. You're moving away from your parents being the center focus. You're probably scared. You don't know what's going to happen. Here's a little idea of some of the things you should pay attention to." A gentler approach to Shatner's 1986 SNL sketch.