Still undecided on the PS4? Here are reasons why you should upgrade from current to next-gen.

The Legend of Dragoon Update Fixes Major PS4, PS5 Problems However, Sony is indeed continuing to update the aged PS3 console, as evidenced by the Version 4.90 firmware patch that was recently ...

PS3 to PS4 is basically not done unless it was a PS3 exclusive game in the first place. The reason, as DisplayNameTaken alluded to, is the difference in the CPU (not so much the GPU) of the PS3.