I never expected the Secret Service to release anything. As a rule, active agents never betray the privacy of the current occupants of the WH.
Look for several books to come out dishing on Joe and Hunter when current agents either retire or are dismissed. See Crisis of Character, as to past practice with the Clinton Crime family.
As I said, retired or dismissed SS agents tend to spill the beans when they just feel they have to and they don't need the paycheck anymore.