Gran Turismo 6 arrives in stores on December 6th. According to Creator Kazunori Yamauchi (via Eurogamer) the game will receive a large day one patch.
It's the same every time," said Yamauchi. "Everything's very tight. It's an incredibly tight schedule. As to being able to include everything we want to on day one, we probably won't be able to. I think for the 12 months following the release we'll continue to update the software. Because in Gran Turismo 6 we're preparing a lot of different things we haven't even touched on yet.