The PlayStation Portable version of Gran Turismo 4 is unlikely to be released in 2008, according to Polyphony Digital’s Kazunori Yamauchi.
Speaking to Eurogamer, Yamauchi commented, "We had been developing the PSP version, but the problem was that the PS3 version took much more time and effort than we had first imagined.”
"So that’s been delayed – I don’t think we’ll be able to make the end of this year for the PSP version, but we are working on it,” he added.
Announced back in 2004, the handheld entry in the popular racing sim was originally pencilled in for a spring 2005 release in Japan, but has since been met with numerous delays.
Yamauchi revealed that the game has undergone numerous design changes during its four-year development cycle, and hinted that the title is likely to be released as a form of add-on to Gran Turismo 5.
"Once we experienced PS3 online and went through all of that, we came to the conclusion that PSP should not be a standalone product – it should be linked in to the world of Gran Turismo, linked with the PlayStation 3,” he said.
Stay tuned.