He has called a press conference on wednesday, the first day of testing at monza. This has risen some rumours whether he would be quitting F1. It would certainly be in line with his sad face at the press conference and him being so quiet after winning the title. Also Ferrari has said they will make some changes to their staff and working methods in the remaining five races. I know that's a bit far off, but I'm optimistic. Maybe now that he has his historic seventh title in his pocket, he feels there is nothing more to achieve, and he wants to finally spend time with his family instead of travelling round the world and getting scorched by the media, and then risk his life on the track.
Hopefully his press conference will be short: "I quit."
Would be interesting to see who drives the ferrari next season if he decides to quit. An interesting twist would be to see Mika Hakkinen drive in his old worst enemy's colours.