Windows 8.1 build 9600.16581

On 2014-01-08, WZor.Net released an article that described this build. It is supposed to be a pre-release build of "Windows 8.1 2014 Update". 7 screenshots were published with the article. They also tweeted several screenshots, two of them not even included in the article.

On 2014-01-13, another screenshot was posted by Hipek to CentrumWindows ▪ forum.

This build is rumoured to be leaked on 2014-01-15 by WZor.