If you're really really looking forward to the full, disc-based Gran Turismo 5, you're going to be really really looking forward to it for quite a while yet. Kazunori Yamauchi, the creator of GT and CEO of its developer, Polyphony, has said that it may not be out until 2010. That's not a typo. 2010. Two years from now.

That doesn't mean you'll be entirely bereft of new GT content for the next two years, however. In the meantime, Polyphony plans to continue to beef up GT5 Prologue with new cars, tracks and features. While proper details are not available, Yamauchi apparently said a new update is planned for the near future.

Back in March Chris Hinojosa-Miranda, an associate producer for Sony Computer Entertainment America, said that GT5 was "about a year away". He might want to check his calendar.

For those of you whose memories stretch back to Gran Turismo 4 Mobile being announced, Yamauchi said that the game is still in active development and hasn't been forgotten. It's not planned for release before GT5, however.

The game was first announced waaaay back in 2004 as one of the first batch of titles to be released on the PSP. It hasn't materialised, with Kaz Hirai, president and group chief operating officer of Sony Computer Entertainment Incorporated having told SPOnG last year that this was due to "allocation of resources" at Polyphony.

^{Source: Joystiq}