The Multimedia section has been updated with information on supported codecs, multimedia features and DRM technologies. The section describes the relationship between the different DRM-related APIs and offers details on how to play DRM-protected audio content.
The Testing and Signing Developer's Library has been incorporated into the C++ Developer's Library.
For example, the Security section now includes an FAQ, and some general information on the security concepts that are relevant to the S60 platform. Note that signing-related information is now explained on the Symbian Signed Website.