Microsoft today unveiled the first preview build of Windows 11 Windows Insiders will be able to download the Windows 11 preview (build 22000.51) right away. The preview allows you to access the new Start menu and multitasking features, as well an overhauled Microsoft Store. The official preview is updated with File Explorer, contrary to the Windows 11 leak. It replaces ribbons with a command-bar, which makes managing files much easier. Most of the Windows 11 visual changes Microsoft announced last Thursday would be available in this preview. This preview also includes the new Start Menu with its center-centered launcher interface. Windows 11 will feature a parallax motion effect, if your computer is equipped an accelerometer. This preview also features the new themes and enhancements to dark and lighter mode settings, as well new widgets. Microsoft has integrated new themes Glow Captured Motion and Sunrise, with brand-new Windows 11 sounds. Two key Windows 11 features a