Windows 10 build 10041 (fbl impressive)

Windows 10 build 10041 (fbl_impressive) is the official March Technical Preview build of Windows 10, released to Windows Insiders on 18 March 2015 for Fast ring users and on 24 March 2015 for the Slow ring. Project Spartan is not included in this build. This build contains mostly bug fixes and under the hood changes, with little in the way of new features, from the previous candidate build 10036.

Hidden fearures
This build contains several hidden features, including new volume control, new print dialog, new Clocks and Calendars app and Windows Default Lockscreen.