Here are key milestones in Microsoft's road to delivering Vista, the next version of its Windows operating system:
AUG. 27, 2004
Microsoft says it will eliminate some of the planned features of Longhorn, renames it Vista, and says it will ship in the second half of 2006.
NOV. 1, 2005
Chairman Bill Gates announces a new generation of online software services, Windows Live and Office Live, designed to compete with Google and Yahoo! in the consumer market.
MAR. 21, 2006
Citing testing and quality reasons, Microsoft announces a delay in the release of Vista, pushing the versions for consumers and small businesses back to January, 2007.
The release of Windows XP, the predecessor to Vista. Development had already started on the next version, then code-named Longhorn.