I've got to admit that I wouldn't be surprised to see Microsoft table Service Pack (SP) 3 for Windows XP, as Windows expert Paul Thurrott claims the Redmondians have done.  Now ZDNet 's Mary Jo Foley asked Microsoft for an official comment on Thurrott's XP SP3 post and received the following response:  "SP3 for Windows XP Home Edition [and Professional] is currently plannedfor 1H CY2008. This date is preliminary," said a Microsoft spokeswoman. In other words: At least for now, Microsoft is sticking by the XP SP3 information on its product-lifecycle page.