Ok, I know "Free Bird" isn't a particularly new song to the world of music games; Guitar Hero 2 came out almost 5 years ago. I also know that a lot of people are tired of music games. That said, Rocksmith actually looks pretty good, albeit a bit daunting.
If you're planning on getting the title in mid-October you may want to consider preordering from Gamestop or Best Buy to get two free tracks: Lynyrd Skynyrd's "Free Bird" and Radiohead's "Bodysnatchers." Then again, it's "Free Bird" and "Bodysnatchers," so that's totally your call.