Publisher's description

The Windows Developer Preview is a pre-beta version of Windows 8 for developers.

Windows 8 is Microsoft's combined desktop, laptop and tablet operating system, designed to work on 10-inch touch-only tablets or big screen desktops and laptops.

Steven Sinofsky, senior vice president of Microsoft's Windows division, confirmed earlier reports that Windows 8 will next segue into one beta version, followed by one Release Candidate.