Updated: April 22, 2011. The Microsoft SharePoint 2010 Software Development Kit (SDK) includes documentation and code samples for Microsoft SharePoint Foundation 2010 and for Microsoft SharePoint Server 2010, which builds upon the SharePoint Foundation 2010 infrastructure. The documentation includes detailed descriptions of the technologies that SharePoint Server 2010 and SharePoint Foundation 2010 provide for developers, reference documentation for the server and client object models, and step-by-step procedures for using these technologies and object models and programming with them. This SDK also includes best practices and setup guidance to help you get started with your own custom applications that build and extend upon the SharePoint Foundation 2010 and SharePoint Server 2010 platforms.
The Microsoft SharePoint Administration Toolkit contains the following tools to help manage SharePoint Foundation 2010 and SharePoint Server 2010
New in SharePoint 2010 Administration Toolkit 2.0, the SharePoint Diagnostic Studio 2010 (SPDiag 3.0) provides SharePoint administrators with a unified interface that can be used to gather relevant information from a farm, display the results in a meaningful way, identify performance issues, and share or export the collected data and reports for analysis by Microsoft support personnel.
Supported Operating Systems:Windows Server 2008 R2;Windows Server 2008 Service Pack 2
SharePoint 15 — the next version of SharePoint that will hit around the time Office 15 does (estimated to be in 2013, at this point) — is in the midst of development. I wouldn’t be surprised if we got a sneak peek, if not a very early test build, of the next SharePoint in this calendar year, too.