If you've got a 360 and still use it regularly then you might be interested in the latest public beta that will soon be underway. The basic information about this update was posted on Major Nelson's blog where he invited the community to join in on the beta.
What does the beta offer? Well, it speeds up the system's booting as well as a handful of other performance tweaks. The bigger aspect of this change however is the removal of Microsoft points in favor of real money-based transactions.
This is of course because Xbox One was promised to use local currency transactions. In order to offer this, the existing Xbox Live needs to be transferred over beforehand. If you want to give these new features a test then you can sign up. Unlike previous betas, users sign up through the 360 itself.