Microsoft has released the first Windows 11 Preview build. Windows Insiders can download Windows 11 preview build 22000.51 immediately. The preview includes the new Start Menu, multitasking capabilities and a revamped Microsoft Store. Official preview includes an updated File Explorer that replaces the ribbon with a command bar. This is in contrast with the Windows 11 leaked. This preview features the new Start menu with its launcher-like interface. You will also see rounded corners throughout the OS and improvements to the notification centre. Most of the visual changes Microsoft has announced for Windows 11 in its initial preview will be included in this first preview. For those who have an accelerometer, Windows 11's lockscreen will include a parallax motion effect. Microsoft has paired the three new themes Captured Motion Sunrise, Sunrise and Flow with new Windows 11 sounds. These new sounds can be used to enhance your Windows 11 experience. Preview includes Windows 1