Windows 8 pre-beta released Dev Preview

[MaXiMu]

First public released Pre-beta For Devs On Windows dev center

http://msdn.microsoft.com/en-us/windows/apps/br229516

Sha 1 hash - 6FE9352FB59F6D0789AF35D1001BD4E4E81E42AF
All of the following come on a disk image file (.iso). See below for installation instructions.
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

Download Windows Developer Preview with developer tools English, 64-bit

Sha 1 hash – 79DBF235FD49F5C1C8F8C04E24BDE6E1D04DA1E9
Includes a disk image file (.iso) to install the Windows Developer Preview and Metro style apps on a 64-bit

Download Windows Developer Preview 64bits

Sha 1 hash - 4E0698BBABE01ED27582C9FC16AD21C4422913CC
Includes a disk image file (.iso) to install the Windows Developer Preview and Metro style apps on a 32-bit PC.

Download Windows Developer Preview 32-bits

System Requeriments

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