Windows 10 build 10041 (fbl impressive)

Windows 10 build 10041 (fbl_impressive) is the fifth officially released Technical Preview build of Windows 10, which was released to Windows Insiders in the Fast Ring on 18 March 2015, and to Windows Insiders in the Slow Ring on 24 March 2015. 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 features
This build contains several hidden features, including new volume control, new print dialog, new Clocks and Calendars app and Windows Default Lockscreen.