Though this is nearly a month old, I just saw this today...

Microsoft is now providing five years of "mainstream" support, plus five years of "extended support" for XP Media Center and XP Home Edition. Previously, Microsoft provided no extended support for the consumer versions of its XP operating system.
Consequently, consumer versions of XP are now covered under mainstream support through April 2009, and under extended support through April 2014."

Blogs.ZDNet/Microsoft