Earlier today at the keynote of BUILD conference, Steven Sinofsky, President, Windows & Windows Live Division at Microsoft announced that developers will be able to download the Windows Developer Preview via the new Windows Dev Center. Microsoft showcased a detailed preview of the next major release of Windows, code-named Windows 8.’ The Windows Developer Preview is a pre-beta version of Windows 8 for developers. 
The new Windows Dev Center dev.windows.com – has just gone live and promises to make guides, tools, samples, forums, docs and other resources to build on Windows available soon. You can download the Windows Developer Preview right away.
Download Windows 8 Developer Preview
Windows Developer Preview with developer tools English, 64-bit (x64) – DOWNLOAD (4.8 GB)
All of the following come on a disk image file (.iso).
- 64-bit Windows Developer Preview
- Windows SDK for Metro style apps
- Microsoft Visual Studio 11 Express for Windows Developer Preview
- Microsoft Expression Blend 5 Developer Preview
- 28 Metro style apps including the BUILD Conference app
Windows Developer Preview English, 64-bit (x64) – DOWNLOAD (3.6 GB)
Includes a disk image file (.iso) to install the Windows Developer Preview and Metro style apps on a 64-bit PC.
Windows Developer Preview English, 32-bit (x86) – DOWNLOAD (2.8 GB)
Includes a disk image file (.iso) to install the Windows Developer Preview and Metro style apps on a 32-bit PC.
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
Note that you can’t uninstall the Windows Developer Preview. Also, the preview is available as-is, and is unsupported by Microsoft. The Windows Developer Preview is delivered as an .iso image that must be converted into installation media stored on a DVD or a USB flash drive.
Sinofsky mentioned that this developer preview will be followed by one beta version, and a release candidate before the final release. With Windows 7, a similar process took about a year to go from developer preview to final release. Microsoft hasn’t specified if and when a preview version of ARM-based version of Windows 8 will be made available.
Prior to this, all the developer information, downloads, and documentation was hosted at Microsoft’s developer portal MSDN. This included development for Windows client, and other Microsoft’s web and server technologies. With the launch of Windows Phone 7, Microsoft created App Hub, a developer portal for Windows Phone 7 app and games developers and Xbox LIVE game developers. Unless some integration or merger happens in the future around the release of Windows 8, this could create factions between developers on same technologies but on different portals.


