Microsoft announces extended support for XP
 

Today, as Microsoft prepares for the consumer release of Windows Vista, the Redmond-based software company quietly announced that they are adding additional support for Windows XP Home Edition and Windows XP Media Center Edition (MCE). With this announcement, XP and XP MCE will be covered by five years of Mainstream Support (ending in April 2009) and five more years of Extended Support. This move matches the support timeline that had previously been offered for Windows XP Professional.

http://arstechnica.com/news.ars/post/20070124-8691.html