Xbox Live update preview program now rolling out

Xbox 360's resident spokesman Larry "Major Nelson" Hryb wants you to know that the Xbox Live update preview program is now officially a go, with the first wave of registered participants getting automatically prompted to update upon sign-in (you should also receive an email, but apparently they're behind on the notifications). More people are said to be getting the update "in the coming days," so don't lose hope yet -- not that waiting for Twitter, Facebook, and integration, and 1080p instant-on streaming should cause ultimate despair, but we digress. The only thing you don't get is the Halo Waypoint preview, which doesn't join the preview fun until next week.

[Thanks to everyone who sent this in!]