CNet has the news that Microsoft is currently aiming to release the next version of the Windows operating system in about three years. Previously known as Vienna, the OS is now simply known internally as '7'. After achieving a quality product, the article states, Microsoft's big goal with 7 is to recapture a regular release schedule for their operating system product. From the article: "Like Vista, Windows 7 will ship in consumer and business versions, and in 32-bit and 64-bit versions. The company also confirmed that it is considering a subscription model to complement Windows, but did not provide specifics or a time frame. Next up on Microsoft's agenda is Service Pack 1 for Windows Vista, which is expected before year's end. The discussion of Windows' future isn't surprising, given that Microsoft has been criticized by business customers for delays related to Vista. Many business customers pay for Microsoft's software under a license agreement called Software Assurance."