
Microsoft released Windows 8 Developer Preview

Microsoft introduced Windows 8 yesterday at the Build conference in Anaheim, California. It described how the new OS bridges the gap between tablets, laptops and desktop computers with a lightweight system that is designed for both touch screens and keyboards.
Windows 8 features include a new Metro interface, faster boot times (less than eight seconds), a new Windows app store, app-to-app communications, ARM and Intel-based hardware support, and countless changes in user experience and interface. which are strikingly different from their predecessors.
Microsoft has published links to download Windows 8 in the Windows Dev Center. During developer preview, Windows 8 will be free. It will be available in 32- and 64-bit configurations.
Of course, this is not a finished product, so be prepared for bugs, constant updates and software incompatibilities. In general, act at your own risk.
If you want to get some idea of Windows 8 before installation, see the screenshots under the cat.
At the conference, Microsoft demonstrated many devices on Windows 8, including tablets:

Personalized lock screen shows unread letters and notifications of other applications:

Applications and content on the start screen:

Work with files:

Internet Explorer:

via Mashable