Microsoft says to extend XP sales
The world's largest software maker introduced Windows Vista in January with the plan to phase out sales of its predecessor, Windows XP, by January 30, 2008.
Microsoft said it decided to extend XP sales in response to feedback from computer manufacturers who said there were customers who still wanted to buy the older operating system.
Honestly right now, except for DX10, there really isn't a compelling reason to use Vista. It has some nice improvements over XP, but it's not a must-have OS by any means.