2011年9月14日，微软正式发布Windows8开发者预览版！本次Windows8开发者预览版包括三个版本，其中一个是保护开发者工具的64位系统版本，其余两个就是32位和64位纯Windows8系统版本。
由于此次发布的Windows8开发者预览版并非稳定版，只供展示使用。由于此Win8版本非常不稳定，不建议在工作环境安装这个版本。
同时，建议同学下载32位的Win8。
| 软件名称： | Windows8 |
| 软件版本： | 开发者预览版 |
| 软件大小： | 2800000k |
| 软件授权： | 免费 |
| 适用平台： | 建议在虚拟机上运行 |
| 下载地址： | Windows8 |
Windows8开发者预览版安装教程已经发布，请点击《Windows8安装全程图赏 兼Win8安装教程！》。
点击图片进入微软Build 2011大会专题
以下是摘自官网的原文。已经下载了Windows8的网友记得核对Sha 1 hash有没有错。
The new Windows Dev Center is launching soon
The Windows Developer Preview is available to download now! Come back to the Windows Dev Center soon to get the Windows Developer Preview guide, samples, forums, docs and the resources to build on Windows.
Download the Windows Developer Preview nowThe Windows Developer Preview is a pre-beta version of Windows 8 for developers. These downloads include prerelease software that may change without notice. The software is provided as is, and you bear the risk of using it. 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.
Windows Developer Preview with developer tools English, 64-bit (x64)DOWNLOAD (4.8 GB)
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
Windows Developer Preview English, 64-bit (x64)DOWNLOAD (3.6 GB)
Sha 1 hash – 79DBF235FD49F5C1C8F8C04E24BDE6E1D04DA1E9
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)
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.
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