The report says " This Special Bulletin is published to provide more factual information and an update on the progress of the investigation. No analysis of the facts is attempted." I think it remains a mystery.
The one thing they haven't covered at all so far is the capacity of the pilot. Might he have been incapacitated by injury or illness? The presumption has to be that he wasn't otherwise something would have been flagged and maybe the funeral would have been delayed.