I have downloaded the sources from
I think this are the sources from the patch
[ 1927608 ] Bugfixes and enhancements for 3.05B
I checked out and compiled the sources and did some tests. Unfortunately the cgfx shader examples don't work properly. It seems for me, that the changes are not quite completed. So in the class "CFXSemantic" the methods "uploadUniformToShader" and "uploadVaryingToShader" just throw an error message. It appears in the maya script editor on loading cgfx shader files. The parameters will not be loaded correctly.