Windows 10 build 10138

Windows 10 build 10138 is a build of Windows 10.

Changes

 * Major changes regarding the appearance of the user interface.
 * The start menu icon has become slightly brighter.
 * Renamed Project Spartan to Microsoft Edge.
 * Added a new dark theme to Microsoft Edge.
 * Updated the appearance of the taskbar expand button.
 * Changed the default wallpaper.

History
This build has potentially the most bizarre leak method for any Windows build. On 28 June 2019, BetaWiki Discord user lucasm uploaded a 7z file with a password added called "payrespects.7z", containing an x64 Pro ISO of this build. The password then had to be guessed by other users of the BetaWiki Discord server. Windows 10 build 10143 was also leaked via a similar 'game' two days later.