I doubt they let him go, as much as he should be released. They let out younger and way more dangerous people. He is in for killing a gangster, not for intentionally killing a civilian. Plus he is no longer a threat, although they will claim he is. Yes, cop killers, domestic and foreign terrorists, rapists, they all are given more leniency than him and other mob guys. 30 years served and he is senile and sick. It probably will not matter to them.