It covered some of the post production phase as well.
But I fear if they do use any of it, those pesky things Lucas wish he hadn't said in 1979 will be found nowhere outside of slowly disintegrating 30 year old paperbacks.
I did buy the magazine today, and picked up Star Wars insider as well. It has a few pages of Empire storyboards, and yet another picture of Leia and Chewie making out. ;)