Microsoft is planning to release a preview build of Windows 9 at a special press event on September 30, according to sources familiar with Microsoft's plans. It's still unclear exactly how many of Windows 9's hotly anticipated features will actually make it into the September 30 release -- but hopefully we'll at least see the resurrected Start menu and Metro apps running on the Desktop. We wouldn't be surprised if you have to wait a little longer for the consumer preview of Windows 9 before you get to play with your new Cortana digital assistant, however.