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There's always been disagreement about whether large blobs, such as document and multimedia items, should be stored in the database or file system. In SQL Server 2008 you don't have to choose; filestream storage provides the best of both approaches.
MSDN Magazine May 2009
New spatial data support in SQL Server 2008 opens the door to mapping and querying geometric and geographic data, allowing you to build exciting new applications.
MSDN Magazine February 2009