“Moments ago, the team released a system update (aka Dash update) to all Xbox Live members,” writes Xbox mouthpiece Major Nelson. “Over the next few hours - or the next time you sign into Xbox LIVE after that - you’ll receive a prompt to accept this mandatory update.”

The Major is alluding to the latest update to hit Xbox LIVE, the Summer Update, which adds, amongst other things, the new Games on Demand service, new Avatar clothing support, added Netflix functionality in the US, and generally more control over your favourite content.

The Major then goes on to point out a few things you should know about the update before getting your hopes up:

“While you can browse and purchase Avatar items and full Xbox 360 games in the console with this update,” says Nelson, “the ability to add these items your Xbox 360 download queue from Xbox.com will be available this Thursday.”

Additionally, “Xbox LIVE integration with Twitter, Facebook and Last.FM will be available later this year” and “Zune Video Marketplace will also ship later this fall when it will replace the current Video Marketplace.” Major Nelson is so kind to us, but his words of caveat continue:

“This update will be rolled out to all Xbox LIVE members around the world over the space of a few hours, so you may not get prompted for the update immediately. Thanks for your patience and have fun.”

Indeed!