The What's New portion is in the SolidWorks What's New document. In SolidWorks, go to Help > What's New and you can open a PDF or HTML from there. You can also get the PDF from C:\Program Files\SolidWorks 2012\SolidWorks\lang\english\manuals.
A few updates:
Admin tool was updated
Display Full User Names
Search is now embedded in the File Explorer (it won't open a new window)
Version Toggle on Where Used tab
Log into the customer portal and then go to the fixed SPR list. That list details all of the changes that have been rolled into each service pack.
Hope this helps. :0)
Or... just search in Google for..
whats new solidworks epdm 2012
Quickest way to fine the onle help for SolidWorks