From the http://blogs.technet.com/kevin_beares/archive/2007/11/07/windows-server-centro-is-officially-unveiled-and-has-a-new-name.aspx a small amount about Centro and the tech beta. This is produced by the same team who build SBS 2003 R2 and SBS Cougar. More on those next year. Windows® Essential Business Server is the new Microsoft server solution for small to medium businesses, with 50 to 250 client computers in their organizations. Windows®Essential Business Server offers a standardized server configuration that is designed to meet the needs of most midsize businesses. The configuration is optimized to meet the currently recommended practices for networking, security, collaboration, and remote access. The tightly integrated Windows Essential Business Server simplifies setup, migration, and licensing for Microsoft infrastructure server products that a midsize business uses most frequently. Most network services and resources are managed through a single Windows®Essential Business Server Administration Console...