Some of the comments:
- Carmack has heavily been into OpenCL the last 1.5 years. They now use raytracing for all offline rendering instead of rasterization for megatexture processing.
- Hopes Cell doesn't return with the next PlayStation. Peak performance is great in specific cases, much faster than the X360 and only matched by the most extreme pc's but overall the CPU is a pain in the ass.
- 'Infinite detail' and procedural generated detail is really just a truly crappy form of data compression.
- SOC (CPU and GPU in one) will sneak up on people, Intel cpu's getting there.
- Ray tracing will ultimately win over rasterization, will make graphics programming much easier.
- Next gen console games will be built with tessellation from the ground up and some games will dip into ray-tracing.