It was released on Octoas one of the launch titles for the new PSP Go. Following five years of delays and speculation, it made a reappearance at E3 on Jin a playable form. The game was announced at the E3 Sony press conference on May 11, 2004, the same conference where Sony announced the original PSP. Gran Turismo also previously known as Gran Turismo 4 Mobile,Gran Turismo Mobile, Gran Turismo 5 Portable and Gran Turismo Portable) PlayStation Portable (PSP) game developed by Polyphony Digital.
