This week, Microsoft shipped beta versions of its next-generation Windows Small Business Server (SBS--code-named Cougar) and Windows Medium Business Server (code-named Centro) products. These products are currently available only via private beta.
Both Cougar and Centro will be 64-bit products that run on only the x64 hardware platform. Cougar is the Longhorn-era version of SBS and includes integrated versions of Longhorn Server, Exchange Server 2007, SQL Server 2005, ISA 2006, Windows SharePoint Services, and System Center Essentials.
For more information: