The "Prologue" suffix is a self-reference to the million seller Gran Turismo 4 Prologue released in Japan, Korea, South-East Asia and Europe one year before the full version of Gran Turismo 4 for PlayStation 2 which came out in 2004. It is unsure if the Blu-ray Disc version of Gran Turismo 5 Prologue will be released in North America as the Concept and Prologue Gran Turismo short titles were not released in this area, furthermore no official statement has been made so far. However, Vision Gran Turismo is available for pre-order on the Best Buy website, with a release date of December 31, 2007. The Best Buy listing is an error, as Vision Gran Turismo was only a concept shown at various gaming conventions.