Oracle GlassFish Server is the commercial supported version of GlassFish. It includes, under the GlassFish Server Control umbrella, some added features such as Performance Tunner, Monitoring Scripting Client, the Load Balancer Web Server Plug-in, etc. In addition, another key value of this offering is obviously Oracle's Commercial Support for GlassFish.
This GlassFish For Business post describes in more details the 3 pacthes that have been released in April 2013:
Those patches are available to customers with a valid support contract on the My Oracle Support portal.