Microsoft hat das SharePoint Development Center für SharePoint 2010 veröffentlicht.
Wer sich für die Entwicklung für SharePoint 2010 interessiert, sollte sich das anschauen:

Das Development Center stellt derzeit 10 Module bereit, um .Net-Entwicklern den Einstieg in die Entwicklung für SharePoint 2010 zu erleichtern:
Modul 1: Getting Started Building Web Parts in SharePoint 2010
Modul 2: What Developers Need to Know About SharePoint 2010
Modul 3: Building Blocks for Web Part Development in SharePoint 2010
Modul 4: Accessing SharePoint 2010 Data with Server-Side APIs
Modul 5: Accessing SharePoint 2010 Data with Client-Side APIs
Modul 6: Accessing External Data with Business Connectivity Services in SharePoint 2010
Modul 7: Developing Business Processes with SharePoint 2010 Workflows
Modul 8: Creating Silverlight User Interfaces for SharePoint 2010 Solutions
Modul 9: Sandboxed Solutions for Web Parts in SharePoint 2010
Modul 10: Creating Dialogs and Ribbon Controls for SharePoint 2010