Let's see.
1. The Kennedys had a political and business relationship with the Mafia before the election and while John was president, including a mutual interest in Cuba
2. Robert was going after the Mafia and specifically Hoffa
3. Oswald had ties to Cuba
4. Ruby had ties to the Mafia and specifically some of the people with an interest in Cuba.
5. Frank Sheeran (a Mafia hitman) confessed to killing Hoffa and claimed to have knowledge of the Kennedy assassination and having a role in the guns used.
We're all paranoid. There can't possibly be anything here.
Of course, nothing of value will be released otherwise they would not be releasing it.