Developers will be able to download the Windows Developer Preview of Windows 8 at 8 p.m. Pacific Daylight Time.

Sinofsky said that the Developer Preview will include updates to the OS and supporting tools, like Defender, through Windows Update. This is how Microsoft will test its Windows Update service adapted for Windows 8.

Julie Bort is the editor of Network World's Microsoft Subnet community. She also writes the Microsoft Update blog and Source Seeker for the Open Source Subnet community. Follow Bort on Twitter @Julie188.

in Network World's Software section.