Microsoft has pushed back the delivery date of the next major Windows XP service pack update to the second half of 2007, as much as a year later than earlier reports had indicated. According to Microsoft’s recently updated service pack road map, Windows XP Service Pack 3, or SP3, will release sometime after June 2007. The date, which Microsoft says is preliminary, is about a year later than some 2005 reports cited after CEO Steve Ballmer held forth in Scandinavia.