Windows Vista's availability at the end of January 2007 signaled the beginning of the end for Windows XP. Nothing spells out the situation more clearly than statistics illustrating the oscillations of the shares associated with Windows XP and Windows Vista, on the operating system market.
From 85.30% in December 2006, following the business launch of Windows Vista, according to data from Market Share by Net Applications, Windows XP has dropped to just 81.94% in June 2007. Eroding XP's share is of course Vista. By contrast, Microsoft's latest operating system jumped from 0.93% in February 2007 to 4.52% the past month. Just in the first 100 days on the market, Vista sold approximately 40 million licenses, outperforming XP by more than two to one. more...