Windows 7 (formerly known as Blackcomb and Vienna) is the working name for the next major version of Microsoft Windows as the successor of Windows Vista.
**Microsoft has announced that it is "scoping Windows 7 development to a three-year timeframe", and that "the specific release date will ultimately be determined by meeting the quality bar."
**Windows 7 is expected to be released sometime in 2010.
** The client versions of Windows 7 will ship in both 32-bit and 64-bit versions.
** A server variant, codenamed Windows Server 7, is also under development.
Microsoft is maintaining a policy of silence concerning discussion of plans and aspirations for Windows 7 as they focus on the release and marketing of Windows Vista,[4] stating that Microsoft doesn't want to promise features and then fail to deliver, though some early details of various core operating system features have emerged. As a result, little is known about the feature set, though public presentations from company officials have disseminated information about some features. Leaked information from people to whom Milestone 1 (M1) of Windows 7 was shipped also provides some insight into the feature set.