It doesn’t feel right to count that generation as retro, for reasons like GTA 5, which was initially released for those consoles, yet it’s still considered a current game, with no significant overhaul beyond graphical fidelity. It’s the greatest example of how games haven’t drastically evolved since then.
Compared to the jump from SNES to N64 and PS1, or from PS1 to PS3, we haven’t had any major breakthrough, just moderate incremental improvement.