I've heard from a few people I know in Rome who claim that they have talked to "inside" people who are very close to the pope who've said in hushed tones "this is the end." Having said that I doubt they know what they are talking about--only God knows when the "end" of any of us will occur.
From Yahoo! News - Pope Breathing Unassisted, Advised Not to Speak:
"Navarro-Valls said that when he awoke from surgery the Pope asked for paper and wrote jokingly: 'What have they done to me.'
He also scribbled his Latin motto 'Totus Tuus,' (totally yours), a phrase about his devotion to the Mother of God. "