If I recall correctly, his name will eventually be released if he was the victim of a homicide. But if he died by natural means then the family can choose that his name not be released. I suppose it's possible that he died naturally of his health issues and the family couldn't afford a burial or didn't want to risk being accused of killing him (or possibly they were wanted by the police already for other reasons, maybe illegal immigrants etc) in which case we may never know his name. Though even then he's the victim of a crime, mishandling of a body etc. One media link on page one here stated he was severely malnourished with other signs of neglect, so that could be the cause of death. Doe network states the cause of death as undetermined.
I suppose we'll have to wait and see.