On a press meeting held at Microsoft headquarters recently, Steve Ballmer announced they will be cancelling all sales of it's new Operating System "Windows Vista", due to an extremely high cost and very low sales.
Although you can still buy it at your local stores, after they run out of their stock they will have no more. Microsoft has already stopped shipping it's products to Indonesia, Africa, Antarctica, Greenland, U.S.A., and Australia. It was also announced that current users of Vista will have 1 year to return it to Microsoft for a full refund before their copy expires and completely shuts down.
Source: The Inquirer