This news according to the Vatican Insider:
Commentary. Of course, this is not going to mollify those who would rather spin conspiracy theories, but the banal fact is that Pope John Paul I died of a heart attack, after days of complaining about his work load. Saints are not exempt from feeling overwhelmed, of course. Perhaps we should invoke Pope John Paul I's intercession when we feel overwhelmed, for he understands how that feels.“Some interesting new facts have come to light regarding Pope Luciani’s state of health, thanks to the testimonies (167 people have been heard) and medical documents collected. These sources definitively confirm that he was not killed.” This is according to Mgr. Enrico Dal Covolo, Rector of the Pontifical Lateran University and Postulator of John Paul I’s sainthood cause, who spoke to Italian news channel Tgcom24 in an interview on Pope Luciani who passed away after just 33 on the papal throne. In two days, on 17 October, it will be his 100th birthday.
Pope John Paul I
On Wednesday Mgr. Dal Covolo will deliver the first part of the Positio - the documentation on John Paul I’s heroic virtues, on his life and on the miracle he is believed to have performed – to the Prefect of the Congregation for the Causes of Saints, Cardinal Angelo Amato.
“We will deliver the Positio on 17 October - the postulator said – and the process for determining the Pope’s miracle will continue. I am certain that the Pope will soon be proclaimed a saint, though we still do not know exactly when. The cause is hanging by a very thin thread and we need to be careful!”
“I met with Pope Benedict XVI about a week ago – Mgr. Dal Covolo added – and he confirmed he was very glad about this step forward in the late Pope’s beatification process, advising me to be cautious. He strongly supports this cause, with great affection and interest. He gave a special blessing.”