Sinfulfate
Member
Microsoft is doing another preview program for the fall update(ESPN, Zune Music, Netflix Search, dashboard improvements, but no Kinect stuff). You can sign up through the link on Major Nelson's blog in the link below. I signed up and they invited me in right after I signed up. Preview goes live sometime in the next few weeks and you wont be able to be in party chat with people who don't have the update.
http://majornelson.com/archive/2010/09/22/xbox-live-update-preview-program.aspx
http://majornelson.com/archive/2010/09/22/xbox-live-update-preview-program.aspx