Citing "production-related matters" the much anticipated racing title from Polyphony Digital will no longer be shipping this coming March in Japan.

Reuters is reporting Sony has delayed the release of Gran Turismo 5 to an unspecified date, which the company plans to update in the future.

Sony had yet to announce release dates for North American and European territories, but this news certainly doesn't bode well for fans anticipating a March worldwide release.

GAMINGLARGEST has contacted SCEA for additional comment and info. We'll keep you updated.