One of the many new feature is the xbox live avatar. An avatar (if you don't know what it is [nub]) is a computerized version of yourself in otherwords it represinces you. You'll be able to costomize ur avatar with cloths and accessories (glasses, hats, etc).
Another new feature is that you can now download MUCH better themes than previously. These themes are now like accual backgrounds. With photos of your favorite games and stars. And an update previous system is also included.
AND ALL OF THIS FOR FREE
but you may have to leave your xbox on for a few days. 
