I'm a total broken record on this subject, but it's simply the most logical argument for why GT6 MUST be on PS3. GT5, put plainly is one of the very first PS3 games in development, if not THE 1st which I suspect.
Due to that plus the delays....GT5 looked bad. And I don't mean graphically....that is part of it as well, though realistically even considering the age of the software GT5 was still the best looking racer on the console market when it released and for about a year after. But we couldn't help but be slightly disappointed with the graphics considering well over a year earlier Killzone 2, Uncharted 2 and various others had shown what was actually possible on PS3.....which is alot more than GT5 visually. Imagine if GT5 made it's original launch of 2008-EARLY 2009 the latest? Even if it were the EXACT same game it would have LOOKED alot better....again I'm not talking graphically....even though I am, if you follow.
The point is, there is SO much more for Gran Turismo to pull out of the PS3 hardware. Everyone likes to talk in percentages these days as in "with Crysis 2 we got 100% out of PS3".....yet they somehow got alot more with Crysis 3. I think realistically, when it comes to visual quality....what we see going on graphically, saying GT5 is getting 60% out of PS3's potential would be being generous. It's probably closer to 50.
GT6 needs to be on PS3, because even though it's the same hardware, it could literally look like a whole different generation game than GT5. It could just be ahead by lightyears. Think about just the particle, interaction and deformation technologies in Killzone 2/3. Something easily programmed into any engine once the engine has been opened for new development (meaning these things can't just be patched into an existing game like GT5). Grass and chunks of earth properly kicking up and interacting with cars and environment and ground deformation. Realistic damage. Even Killzone's A.I. could be applied....which is incredible A.I.
Then on top of that you could easily program in things like God of War's anti-aliasing tech and texture proccessing software. God, there's just SO much development software for PS3 that's come well after GT5's engine was "closed" so to speak. All things that can easily be applied to any existing engine such as GT5's once it's been opened up, and all things that we know can all be running on PS3's hardware simultaniously and in real time.
Do you understand that now, GT6 even with all those upgrades, and looking lightyears better than GT5, could even run with NO INSTALL....or a minimal one? None of this stuff was even possible on PS3 when GT5's engine was still open. Now it's almost easy considering Killzone 3 and Uncharted 3 run without an install, that's all real-time stuff!
PD and SOny as a whole would just lose too much face to leave THAT much on the table with their flagship franchise. GoW2 and Shadow of the Colossus both came out on PS2 around the time PS3 launched in America, so we know if Sony has something to prove with the hardware at the end of a generation, they'll pull the trigger. And on top of all that, Sony would be complete idiots business-wise to make GT6 as a PS4 launch widow or even Year 1 game, selling it to an install base of maybe 10-15 million if they are VERY lucky, instead of a late gen PS3 game selling it to an install base of 70+million and still growing. A 70 million and growing fanbase that I might add feels like they got the short end of the stick with GT5.....even if they love it like myself and millions others, we still know there's ALOT more potential there that went untapped.
All that said, while I do think (know) GT6 will be a PS3 game, probably releasing this Fall, I also believe it will be a PS4 game. They just won't release at the same time. In fact I suspect the PS4 launch of GT6 will be well over a year later. There are plenty of racing games that will be coming for PS4, so it doesn't need GT at launch. PS3 and Sony on the other hand could use a HUGE multi-million seller to top off PS3 just before people start moving on to PS4 and while people are still buying PS3s. So a smart plan would be to complete it and get it out the door for PS3 before even starting on the PS4 upgrade.