Microsoft has released a preview release candidate for Windows Vista SP1 to a large group of beta testers. The RC preview beta [ed. note: release candidate preview beta?], which was released late Nov. 14 and includes changes to the setup and installation experience made as a result of tester feedback, was made available to 15000 pre-selected beta testers, just 3000 more than the first beta. Additionally, Microsoft has released a new build of Windows Server 2008.