You need to understand that its pure stupidity to launch a console with their heavy hitters like UC, GoW and GT.
Killzone.. perhaps but the big guns, no. There is no userbase when launching the consoles. You gain so much more on releasing games right now on the PS3, then launch-PS4. Yes, it might help sell hardware; but if the recent gen has taught us one thing is that it's not that huge and both Sony & MS are better off waiting for some Multi games and then launching their titles. For MS though, Halo and Gears could move a lot of HW. For Sony, for its games to even sell as well as right now, they need the userbase and they cant afford to take such a risk.
Thus: We are not likely to see UC4, GoW4 or GT6 within the first, maybe second year of PS4. Id say the same for KZ4 but it's not really as huge and it could be marketed like Resistance was for PS3 in which case, it'd work.