The Blu-ray edition of SummerSlam contains the extra referred to above and the following Blu-ray exclusives.
Monday Night RAW – August 12, 2013:
Daniel Bryan vs. Wade Barrett
Randy Orton vs. Damien Sandow
Mr. McMahon Picks a Special Referee for SummerSlam
SmackDown – August 16, 2013:
Daniel Bryan vs. Wade Barrett (No DQ)