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Windows Blackcomb is an upcoming version of Microsoft Windows, following Windows Longhorn which is due around the year 2008. It will have both a version for the client, or average user, and servers.
Blackcomb was to be officially released as the successor to Windows XP (NT 5.1) at the time of its announcement. However, its introduction was pushed back several years after announcement of an interim version called Windows Longhorn.
