After being denied by Microsoft of it's existence, we have a proof of it. The alpha build of code-named Windows Blue has been leaked. Windows has continued to develope the Metro UI making the following changes:
> Bigger lite size allowed, spanning two full size tiles one above the other.
> Smaller tile size allowed, sizing 1/4 th the size of small tile.
> Can snap two tiles in 50/50 screen
> Can snap 4 tiles, each occupying 1/4 th of the screen.
> New alarm, music and calendar.
A new personilization slider has also been included to allow customization on the fly.
Internet Explorer 11 has also been include in this build, however, and changes in the browser are unknown.
The leaked ISO is a 32 bit version of the Blue and occurrence of bugs is surely expected.
New 50/50 tile snap:
New personilization slider:
New tile sizes:
Windows Blue Alpha Build 9364 Leaks | Maximum PC
Code Red! Windows Blue leaks
First Look: Windows Blue Build 9364 - Tile Sizes, Apps, Settings + MORE - YouTube
More details: http://windows9beta.com/2013/03/windows-blue-build-9364-leaked/