Microsoft Corp. confirmed today that it will unveil Windows 7, the next major version of Windows, at PDC and provide developers and attendees with a pre-beta build of the operating system. During the Professional Developers Conference 2008 (PDC), Steven Sinofsky, Senior Vice President, Windows and Windows Live Engineering Group, will keynote some of the Windows 7 features -including the kernel, networking, hardware and devices, and user-interface. Also, at this year's PDC, keynote attendees will be among the first to receive a pre-beta build copy of Windows 7. Additionally, attendees will have the opportunity to attend 21 different sessions that drill down into the details of developing for Windows 7. "Keynote attendees will be among the first to receive the pre-beta build of Windows 7," the company said.