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Microsoft starts talking about new software to be released after Windows XP it was then titled Longhorn
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Some details about the Longhorn are released on the Microsoft website.
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Bill Gates shows the first live demonstration of the Longhorn at the Microsoft Personal Development Conference. The event was dubbed the Longhorn PDC by Bill Gates
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Bill Gates refers the the target date of Longhorn as 2006
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Microsoft officially announces that the new operating systems name is Windows Vista
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Windows Vista beta 1 reaches the hands of testers
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The Windows Vista is released to corporations
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Windows Vista is released to the general public