Also when I was quoted it left out this:
The description of the 2.5D/3D stacking above would be in the PS4 as most of us have agreed based on the Sony CTO comments.
To get the 2.5/3D stacking it will be a 2014 design which is the first AMD SoC that allows third party IP in the SoC which makes it a lock for a game console SoC that has Sony IP and is a custom design differing from the PC version.
Up until the 2014 AMD SoCs with stacking, it's a one silicon chip Fusion of CPU and GPU with only AMD designs. With 2.5D/3D other companies CPUs, FPGA, DSPs and more can be in the SoC and it can be a custom design.
Jaguar from multiple "leaks"
GCN GPU but with 2014 design it could and most likely will be a 8000 series that is 1.2 times as efficient as a 7000 series.
FPGA Augmented ASICs is interesting but there is no support for this other than the Sony CTO saying programmable arrays and Charlie at SimiAccurate interpreting that to mean FPGA. FPGA in addition to a GPU is currently how more efficient Ray tracing is accomplished.
ASIC is an Application Specific Integrated Circuit and a GPU can be called a ASIC.