So what comes after parallel processing?

[CrashMan]

Speaking as a Software Engineer and an amature game developer, I can tell you that the VAST majority of computation for games goes along at fixed increments, ie the frames of the game. You are still throttled by the slowest thread.

The only thing I can think of off the top of my head that could be put on a thread and run without interdependancy on other thread output is Non-dynamic music.

I didn't say that increased PP will do nothing, but its really bumping up on the edge of what is feasable for games. It will come down to making each thread faster, not adding more of them.

Better Shader compilers will probably help a bit, allowing programming of the GPU as extensive as the CPU, but still you will not see any huge leap in gaming capabilities until it moves off silicon, or some major breakthrough is found to exponentially increase the number of transistors you can throw on a chip.