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'''Windows Seven''' (previously known as "Vienna" [formerly known as "Blackcomb"]) is the name for the most recent version of [[Microsoft|Microsoft's]] [[Windows (operating system)|Windows]] [[Operating system|operating system]], originally announced in February 2000, but was subject to major delays such as [[Windows XP|Windows XP SP2]] and [[Windows Vista (which was also delayed by XP SP2). "Seven" was released on October 22, 2009. Work on Windows Seven began right after Windows Vista was released.  

'''Windows 7''' (previously known as "Vienna" [formerly known as "Blackcomb"]) is the name for the most recent version of [[Microsoft|Microsoft's]] [[Windows (operating system)|Windows]] [[Operating system|operating system]], originally announced in February 2000, but was subject to major delays such as [[Windows XP|Windows XP SP2]] and [[Windows Vista (which was also delayed by XP SP2). "Seven" was released on October 22, 2009. Work on Windows Seven began right after Windows Vista was released.  

Some early details of a few core operating system features surfaced at developer conferences such as WHEC in 2006.

Some early details of a few core operating system features surfaced at developer conferences such as WHEC in 2006.