Results came in a few days ago. It was an opioid overdose due to a broken hip that did him in. Very tragic and eerily similar to Prince in the sense where both guys were in extreme pain and needed to stay off the road but kept giving and giving (both played concerts a week before their deaths) until their bodies couldn't take it anymore and the pain meds killed them.
Sad ending for Tom but it's good his family made it public. He had a lot of great records in his long career