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'''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 7 began right after Windows Vista was released.  

'''Windows 7''' (previously known as "Vienna" [formerly known as "Blackcomb"]) is the name for the version of [[Microsoft|Microsoft's]] [[Windows (operating system)|Windows]] [[Operating system|operating system]] preceding [[Windows 8]], 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 7 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.