Gran Turismo has always been a bit of technological beast, but for the month of October, in Tokyo, Polyphony is helping Sony sell its new 4k resolution TVs with a Gran Turismo demo running at that resolution. So if you feel like playing Gran Turismo at a 4096x3072 resolution you might want to book yourself some flights.
It could be a glimpse at the future of the PlayStation 4. Can we expect that console to support that resolution? Maybe in our dreams.
Some folks may remember that Polyphony ran a similar demo back in 2008 for GT5: Prologue, running the game at a similar res. This may or may not be the same demo, but it's pretty cool nonetheless.