Polyphony Digital has announced Gran Turismo 5 Prologue as a lead up to the much anticipated Gran Turismo 5. The developer recently released Gran Turismo: High Definition for the PlayStation 3 as a download. Gran Turismo 5: Prologue will however for the first time show the true potential of the racing simulator as it uses the full power of the Playstation 3 hardware. A new trailer and screenshots were of course released at E3 and from what I have seen it’s looking quite nice.