Various documents have been posted that you may download for SharePoint 2010.
Download details: Developing Applications for SharePoint 2010
Download details: Microsoft SharePoint Server 2010 Operations
Download details: Microsoft SharePoint Server 2010 Operations
Download details: Microsoft SharePoint Server 2010 Technical Reference
Download details: Microsoft SharePoint Server 2010 Planning
Download details: Search Server 2010 Guide for IT Pros
Download details: SharePoint Foundation 2010 Operations guide
Download details: Microsoft SharePoint Foundation 2010 Upgrading
Download details: Project Server 2010 Guide for IT Pros
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