Wouldn't be a Windows Phone update without Joe Belfiore checking in, right? He's following up on a (slightly controversial) demo he did at the MIX conference earlier this year -- the infamous speed reading demo that shoes the speed of IE9 on Windows Phone.
Plus, Joe walks us through the new features of Mango. Maybe not all 500 of them, but the ones you're going to worry about. Search, Bing Vision (optical recognition), threads, all the really cool stuff.
Source: Windows Team Blog