Microsoft has released the pre-beta version of Windows 8, the upcoming version of Windows OS which is now available for download in both 32 bit & 64-bit versions.
Windows 8 brings a fresh new interface, a bunch of new features, greater performance for desktops and a brand new interface for tablet users called Metro, which provides a larger interface for touch screens with a tile based operating system, similar to Windows Phone 7.
This is an early build of Windows 8, a developer Preview intended for developers.So it is not recommended to install this on a system for daily usage as it may not be stable, operate correctly or work the way the final version of the software will.
Also, features and functionality in the prerelease software may not make it through to the final version of Windows 8 and few product features need advanced or additional hardware, or installation of other software.
Windows 8 System Requirements:
Windows 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
You probably want to try the preview release—and you can. You can download the Windows 8 Developer Preview from below direct ISO links. This includes a 64-bit (x64) build with development tools to build apps, and a 32-bit (x86) or 64-bit (x64) build without development tools.
Update [31/05/2016] : If you are looking to download Windows 7 / Windows 8 ISO images easily, then use this free & tiny tool called Windows ISO Downloader.
Download Windows 8 Pre-Beta ISO [Direct Download Links]:
Windows 8 Developer Preview with developer tools English, 64-bit (x64)[4.8 GB]
Upgrade from Windows 7 installation is not supported for pre-release code; only clean installs are supported. Reminder: this is a developer preview release and is not meant for production
Update 1: Windows 8 release preview was made available on May 31, 2012, download it from below links:
Download link for 32-bit (x86) systems (2.5 GB) S
Windows 8 Product Key: TK8TP-9JN6P-7X7WW-RFFTV-B7QPF
Update 2 [August 16,2012]: Download Windows 8 Enterprise 90-Day Trial Now