Yep, it is December 4th and the Xbox 360 Fall update is finally available. Just connect your 360 to LIVE and it should ask for the download. Simple as that. If by chance your 360 does not say there is an update available (rarely) give it an hour or so and try again. Then then update will come up. 

Also, DivX has been reported working. It is not 100% yet but more like 90%.  So for all the DivX lovers out there, this is a major update for you. In the tests, the 360 could play almost ALL the DivX movies we put on it. 

So what are you waiting for? Go UPDATE.