Those who signed up to preview the Xbox Live Fall update can do so now, according to emails containing a 25 character key sent out to various 360 owners. The key included with the preview works on up to three Xbox 360 consoles, allowing for further update testing for additions such as Bing Search, Voice Support and the “Metro” design. It should be noted, that the update won’t be visible for 3-5 days after entering the code, and the program will be ongoing. So, be sure to check your email’s in-box. Thanks, Neowin.