Windows 7, (formerly codenamed Blackcomb and later Vienna) is the working name for the next major version of Microsoft Windows and 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 will ship in both client and server versions with the client versions available in both 32-bit and 64-bit editions. The server version of Windows 7, Windows Server 2008 R2 , is 64-bit only.
Little is known about the Windows 7 feature set, though public presentations from company officials have disseminated information about some features. Leaked information from people to whom the Milestone builds (M1, M2 and M3) of Windows 7 were provided also provides some insight into the feature set.
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Visit : http://en.wikipedia.org/wiki/Windows_7
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