Microsoft gives us the first official video of the new Windows 8.1

Microsoft has uploaded a 4-minute video giving you a first look of the upcoming update for Windows 8 dubbed Windows 8.1

The video demonstrates just a handful of the new features and customization options and the issues Microsoft has fixed. New tile sizes, lockscreen photo frames, homescreen wallpapers, Apps sorting, and of course, the return of the Start button in Desktop mode.
Check out Jensen Harris from the Windows team giving a neat presentation of the changes that the update brings.