We knew it was on the way, and now it's official. The Xbox Live Fall preview program is available for users who previously signed up, at least to add their registration keys to their 360 consoles to download the update. The program requires users to enter a 25 character key to redeem the update, and the users are under non-disclosure until a later date. It also appears that the key will work on up to three Xbox 360 consoles, allowing them to further test the new dashboard he Fall Update for Xbox360 brings a large amount of new features to the platform that have been long awaited, such as Bing Search, Voice Support and the "Metro" design we've seen across most of Microsoft's properties over the last year, bringing it in line with the company strategy.
So I guess the 3-5 days they gave us was at first was the most realistic. The question is "3-5 days from when?" It could be as early as tomorrow or as late as Tuesday.