The "Integrated" aspect of this specific release typically refers to the inclusion of all major modules (SolidWorks Simulation, Motion, Flow Simulation, and Toolbox) within a single installation package, streamlining the deployment process for engineering teams.
If you are looking at the capabilities contained within this ISO, here are the standout features that defined the 2012 cycle: Solidworks.2012.sp5.0.multilanguage.integrated.iso