Microsoft confirmed its RC rollout plans on December 5. Today, Wednesday, the company made the Vista SP1 RC bits available via Microsoft Connect to the same 15,000 testers it provided with the RC preview. On December 6, Thursday, Microsoft plans to make the Vista SP1 RC bits available on the Microsoft Developer Network (MSDN) and TechNet, officials said. And next week, the week of the 10th, Microsoft plans to make the Vista SP1 RC build available to anyone interested in downloading it from the Microsoft Download site
http://blogs.zdnet.com/microsoft/?p=1013&tag=nl.e622