Cringely explains it all
9th May 2008
Microsoft has been under huge pressure from its hardware OEMs to dump XP, thus forcing millions of customers who have been avoiding Vista and Vista’s inevitable hardware upgrade to finally buy new computers. Dumping XP will help Dell and HP AND Microsoft, big-time. It won’t do anything for you or me, though, since Vista still sucks, but we obviously don’t matter.
Time to buy a Mac.