Yeah, because companies trust business-critical systems to RTM code
Despite the fact that Vista and Office 2007 have not yet been declared "finished" and given the RTM seal of approval, Microsoft is still holding fast to its November 30th launch date for getting Vista and Office to business customers. This will be the first time in over a decade that a new version of Windows and a new version of Office have been released together (the last time being Win95 and Office 95). Some raise the question of why the products would be released to businesses before consumers, especially when businesses in the past have been the slowest to adopt new Microsoft technology. Both products are slated to hit the end-user market in January of 2007.