http://fiberforall.org/fios-map/
I'm not sure fiber will be the be all end all.
http://www.wisegeek.com/what-are-the-pros-and-cons-of-fiber-optic-broadband.htm#didyouknowout
In addition to the large capital requirements and the time necessary for constructing a fiber-optic broadband network, the technology also faces a problem of scalability. Fiber-optics work efficiently in small networks that are confined to a single location where bundled cables of fiber-optic lines can be installed and protected from bending. Bending fiber-optic cables can impede light transfer, and it can lead to permanent damage to the fiber-optics in the cable.
When scaled larger for regional, national, or global broadband Internet service, two obstacles can impede fiber-optic cables that do not impede cable or DSL. Fiber-optic cables cannot be installed above ground on telephone poles or below ground in trenches because there is no practical way to protect cables from bending.