The operating system has always been a focal point for computer users. After Microsoft released the public beta version of Windows 7 on January 29th, there were no other versions until the latest news that the official release date for the final RC (release candidate) version would be April 10, 2009. The source of this information is from an insider at Microsoft.
Steven Sinofsky, the executive in charge of Windows 7 development, has consistently stated that Microsoft is currently focusing on the development of the RC phase, but without a specific timetable.