Windows 7 (formerly known as Blackcomb and Vienna) is the working name for the next major version of Microsoft Windows as the successor to 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 by 2009 or near January 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 it focuses on the release and marketing of Windows Vista, 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.
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