The 32nm 100GbE chip will be scalable like PCIe channels
A 4 pair RJ45 like optical plug will have 4 paths, each path doing 100gbit over optical, only 40gbit over copper.
Picture a completely changed computer architecture where your modularize memory, cpu(s), GPGPUs, etc and separte them from the motherboard. The motherboard has 1x, 4x, 8x, etc - 100GbE optical ports (on a new high density 8 fiber connector). computer components start coming in 5.25 modules (quarter, half high, full hight, double height, half/full length.
Want to add 6 GPGPU cards? No need for multiple PCIe 2.0 16x slots, you just add them on an optical bus.. Run out of optical ports and you get a off the shelf 100GbE switch module (made with the same inexpensive 32nm chips). Want to scale your system up, you buy another computer or host system and interconnect them with a 8x 100GbE interconnect.
If a group of vendors do come together and develop a low cost, mass produced 32nm 100GbE multipath chip that will someday come close approx 5x the cost of a 1GbE chipset, all this will be possible.
The problem is, Intel and other don't want this to happen. It means when you invest in your 2010 computer, it doesn't lose it's functionality in 2015, an enthusiast just keeps buying optically interconnected CPU / Memory / GPU modules and keeps plugging them in to create a vast resource pool that is created by Virtual Machine host software.
With the advent of mainstream 100GbE, and graphics subsytems interconnceted into a single switchable data backbone, you no longer need VGA/DVI/HDMI/Displayport - instead you'll have tiny display modules with optical ports that display any AV source in your network on ANY type of display.
People say optical will never make it into the home. All it takes is a low cost chip and mainstream adoption into medium range parts. USB3.0 will have an optical channel in the cable - there is little reason that in a few years complete product lines can interconnect this way too.
No one is going to bring us an optical PC evolution other than IBM +partners as far as I see it. Few others see the potential of a scaling 100GbE based technology brought down to the home market. Everyone else is thinking only enterprise high $ paying customers.