If you shop online for a new Windows computer, every manufacturer recommends Vista on their web site. For home use they all suggest Vista Home Premium, for business use, Vista Business gets the nod. All the manufacturers sell other versions of Vista of course, most if not all sell Windows XP too, yet their websites universally recommend Vista Home Premium or Business.
Yes, IBM no longer plays in this game. Back in 2005, IBM sold their personal computer division to Lenovo.
However, IBM still sells their old notebook and desktop computers, albeit as "IBM Certified Used Equipment".
IBM, Windows XP, Microsoft
"Windows XP was chosen to run on all PCs handling chores vital to the Olympic Games and has been installed on most of the PCs delivered by Lenovo Group Ltd. Vista will be used only on PCs in Internet lounges set up for athletes to use during the games.
The Olympic Games require mature, stable technologies, said Yang Yuanqing, chairman of Lenovo, during a briefing in Beijing. The Olympic Games aren't a place to try new technologies because of the size and importance of the event, he said. Everything must work smoothly."