Microsoft has released an early build of Windows 10 called Windows 10 insider preview. It is available for download, check it out here. Insider prior expires on October 1, 2015.
However, it is a start of construction so it can be risky. It is recommended that you do not install the display on your primary home or business pc.
If you do not want to install windows 10 no problem. We present you with Microsoft windows 10 hd wallpapers file to experience it.
These wallpapers are windows version preview 10. take a look.