Microsoft's offering developers leveraging its Silverlight same documentation for the last couple releases; According to Microsoft "There's quite a bit of overlap between developing for Silverlight 3 and Silverlight 4 and so in order to not duplicate content in different locations on the web, both versions are covered in same set of MSDN documentation."
Below is a list of tips for finding version-specific information:
- For general changes between Silverlight 3 / 4, see Ensuring That Your Silverlight Apps Work with Silverlight 4.
- Version notes are also available in overviews, tutorials, etc. In a few cases, there're separate versions of the same document e.g. Digital Rights Management (DRM), versus Digital Rights Management (Silverlight 3).