Yeah, I think its most probably contract details, for two reason.
Firstly, Massa have said last week that things are heading in the right direction now, he wouldn't say this if he didn't believe he will have a contract.
Then this week he said his strong result in Japan wouldn't account for his future although its important to him, which hints that decisions have already been taken and Ferrari is no longer evaluating results in Japan.
Massa looked very happy and positive, so I would think that a contract with Ferrari has probably been offered.