( I apologized if this is a repeat.)
First heard this on the BBC a few days ago. They said if he did not show signs to decompose than that would be an affirmation of his sacredness.
http://news.bbc.co.uk/2/hi/europe/4417155.stm"But he has not been embalmed, according to the Vatican, which has insisted, rather elusively, that the body has merely been "prepared".
"There is speculation that the pontiff's skin has at the very least been treated with a disinfectant, and the plinth on which he lies is cooled to slow down the process of decay."
"Vatican officials may be sensitive about embalming the Pope."
"Paul VI underwent such treatment on his death in 1978, but he started to decompose rather more quickly than anticipated, while the speedy embalming of his immediate successor, John Paul I, ended up fuelling speculation that his death, just 33 days after his election, was not the result of natural causes."