Gran Turismo creator Kazunori Yamauch has called the latest in the long series of delays to GT5 'inexcusable' on his Twitter account, telling his followers that the game still has kinks which need ironing out.
"It's because time and labour were spent ironing the kinks out of [the game's] complex system. I'm really sorry. Everyone, it's inexcusable... Wait a little longer."
Previously, the official Sony blog had also said the latest change in release date was down to last-minute polish.
"We sincerely apologise to GT fans for the delay, however, creator Kazunori Yamauchi and the team at Polyphony Digital want to make certain they are creating the perfect racing experience, and we are confident that this ambitious game will exceed expectations when it launches."
The current shelf date for the game is now uncertain, but Sony has promised that the game will be released worldwide during the 'holiday season'.