Sharepoint 2010 introduces many improvements and new features including integrations and new functionalities. Some key improvements are better accessibility and a ribbon interface, social features like tagging and rating, improved document management capabilities, and increased scalability. New features include business intelligence tools, Office web apps integration, external list connectivity, and metadata and workflow improvements. The document also outlines new and improved sites, community, search, insights, composite, content, and developer features in Sharepoint 2010.