Microsoft has released the SDKs of Microsoft Office SharePoint Server 2007 (MOSS) and Windows SharePoint Services (WSS) v3 to RTM.
- SharePoint Server 2007 SDK
The Microsoft Office SharePoint Server 2007 Software Development Kit (SDK) contains conceptual overviews, programming tasks, code samples, references, and an Enterprise Content Management (ECM) starter kit to guide you in developing solutions based on Microsoft Office SharePoint Server 2007.
- Windows SharePoint Services v3 SDK
The Windows SharePoint Services 3.0 software development kit (SDK) contains conceptual overviews, programming tasks, samples, and references to guide you in developing solutions based on Microsoft Windows SharePoint Services 3.0.