My guess is they won't release Gabby's autopsy, because it was ruled a homicide, so they can keep it under wraps, until the case is officially over. Maybe hers will never be released, who knows.
I remember when surfer Andy Irons died, they released the cause of death in detail.
On Friday, June 10th the Tarrant County Medical Examiner’s office released the toxicology report for Philip Andrew “Andy” Irons. It states that his primary cause of death was a sudden cardiac arrest associated with coronary artery disease with a 70-80 percent stenosis (abnormal narrowing) of one of his arteries. It further states that his secondary cause of death was “acute mixed drug ingestion.” According to the report, the following drugs were found either on his person or in his system: Alprazolam (Xanax), Zolpidem (Ambien), cannabinoids (marijuana), naproxen (anti-inflammatory), cocaethylene (a chemical produced in the body when cocaine and alcohol are mixed that’s linked to causing heart attacks in people under forty), methamphetamine, methadone, and cocaine.