The MS CRM Team have released an updated CRM 2011 SDK version 5.0.6 which can be downloaded here http://www.microsoft.com/download/en/details.aspx?id=24004 or viewed on MSDN here http://msdn.microsoft.com/en-us/library/gg309408.aspx
Some of the additions include:
- Added Plugin Registration tool support for Windows Azure AppFabric Access Control Services (ACS) 2.0.
- Updated the AppFabric SDK links and added information on how to use Windows Azure AppFabric ACS 2.0.
- Added documentation for the Plug-in Profiler tool.
- Added guidance recommending the use of PNG web resources for icons.
- Added comment to clarify about the supported use of jQuery.
- Added guidance for improving performance using the setVisible method.