skin weight normalization in Maya 2011

The skin weights normalization has been updated in Maya 2011, there is a new and improved skin weight normalization, called post normalization.  You can change the normalization settings by using the drop down menu in the Paint Skin Weights tools, it lets you set how you want your weights normalized.  The interactive normalization setting is the same as before, while the post normalization gives you improved results.  So to use the new normalization, the workflow would be do your weighting and then to use the Skin -> Edit Smooth Skin -> Normalize weights.