For those that are expecting major changes to the game through updates may be disappointed. Yes, they can hopefully fix any bugs, but major changes to the gameplay will be out of the question imho. The core game is set, whatever decisions they made with regards to number and variety of races, AI, points system, whatever, may not be able to be changed. This is not a PC game were all the game is installed onto the HD, and a whole new game could be a download, replacing what was initially installed. It does install some information onto the HD, but a lot of it runs from the BR disc.
I think the Seasonal Events are evidence of that. At first there were restrictions, but then when people where complaining about the the poor credit return on the in game events, and the OTT price of some of the in game cars, they made the Seasonal Events easier and profitable. They could have just altered the relative return on the in game events and the cost of some of the cars. That would be admitting that they got a major part of the games skewed wrong though, and those unable to get such an update would not be very happy.
Like it or not, a lot of the things people are disappointed with are not bugs, they are the way the game was designed to be, as ScouserInExile has pointed out, and have been for a number of years. A major game re-design can not be done with updates I fear.
That they are seemingly fiddling around with GT Anywhere (which few will make use of imho), leads me to think that they are happy with the design of the game and are adding the things they didn't get time to finish, but definitely want in the game. I hope I'm wrong, but time will tell I suppose.
As a side note, when comparing GT5 to GT5 Prologue, it feels like they were done by different people, and the Prologue people did a better job. That game felt more of a challenge racing wise to me. I was cursing the penalty system in GT5P, but GT5 seems to have not implemented any penalty system unless online. A more intelligent penalty would have been nice, but if they can't get the racing AI right after all these years/games, I doubt the any other type of game intelligence is achievable by PD.