Windows 10 build 10074

Windows 10 build 10074 is the first officially released Insider Preview build of Windows 10, which was released to Windows Insiders on 29 April 2015.

New features and changes

 * New system sounds have been introduced.
 * Accent color has been removed from the search box.
 * Windows Store now uses a blue tile instead of gray.
 * The Network icon has been updated.
 * Closing an application in Tablet Mode now takes you to the Start screen.
 * Multi-tasking improvements (Alt, Task-View, Snap Assist).
 * Personalization options in Control Panel have been removed, as the applet was only intended to be used for switching themes. However, this change would reverted in build 10547.
 * Express settings have been updated in the OOBE.

Cortana

 * Start and Cortana are now more integrated.
 * New experiences in Cortana powered by Bing Instant Answers.

Music and Video Preview Apps

 * Full screen mode has been added to the Music app.
 * You can now download movies, TV shows and TV seasons with the Video Preview app on up to three devices.

Hardware compatibilities
If installing on VMware make sure to change the compatibility to version 12.x, otherwise the build will show a blue screen error when attempting to boot, and disable all network drivers or the build will update the time via the internet, thus activating the time bomb.