i think there will only be a slight graphics change, what i think they will be able to do more of with the next Gen is have more action going on in the screen without any framerate drop, games where you have hundreds of people on screen having an epic battle will be easily done with great graphics and no performance drop.
What do you think of this though? Would you call that only "a slight graphics change"? Because it's guaranteed that the graphics of PS4 and 720 will look like that.
Yes, imo it is. You can see the difference but it's more like ps2 to Wii difference, slighty better complexity and better lightining not ps2 to ps3 difference...it doesn't look so much different from what Sony told Ps3 would look like in 2005.
But that's the point. Your pre-rendered Killzone trailer looks at least one generation better than Killzone 2/3 did in reality.
The Samaritan demo on the other hand is rendered in real time and shows the level of graphics of a typical UE3 multiplatform game in next gen.
The problem is I've seen some people on this site, as well as on other sites, saying that actual the ps3 real-time graphics has fullfilled or even surpassed the e3 2005 expectations. I don't agree with them (even if Uncaharted is quite close), but tha fact that there is some disagreement arount this point shows that there isn't actually such a great difference, anyone can tell the difference between ps2 and X360.