The Windows 8 Developer Preview is a pre-beta version of Windows 8 for developers. It may not be stable, operate correctly or work the way the final version of the software will. It should not be used in a production environment. The features and functionality in the prerelease software may not appear in the final version. Some product features and functionality may require advanced or additional hardware, or installation of other software.
Now you can download Windows 8 Developer Preview.
The Windows 8 Developer Preview works great on the same hardware that powers Windows Vista and Windows 7:
1 Gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
1 Gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)
16 GB available hard disk space (32-bit) or 20 GB (64-bit)
DirectX 9 graphics device with WDDM 1.0 or higher driver
Taking advantage of touch input requires a screen that supports multi-touch
To run Metro style Apps, you need a screen resolution of 1024 X 768 or greater
To know More and Download Windows 8 Developer Preview Visit the Link Below