[citation][nom]bayouboy[/nom]Uhhh, physics says otherwise man. Light is much faster than the propagation of a magnetic field in an electrical circuit which is much faster than electron flow.[/citation]
Actually, it is the propagation speed of an electromagnetic wave that affects the transferring of information.
Electromagnetic waves propagate at the speed of light in a vacuum, 95% the speed of light through unshielded copper, and 66% the speed of light through coaxial (shielded copper).
http://en.wikipedia.org/wiki/Speed_of_electricity
Drift velocity which is caused by an electric field is far to slow to be of use in data transmission.
While there is a potential speed up of up to 50% en route, the generation and detection of light has to be as fast as that of electricity in our current circuits to be of use for small runs.
This is especially true in electric/laser hybrid circuits where there is an additional latency in transforming electricity to light and vice versa.
Longer runs stand to gain more because more time is spent en route.
I would expect to see this technology on consumer motherboards before seeing it on consumer processors.
Of course, other factors, I.E. cost and ease of implementation, could dictate otherwise.