Comment: Re:For us non-US folk... (Score 5, Informative) 272
According to Wikipedia (and its cited sources), the 4G spec was finalized in 2008, and would require the ability for sustained data rates of 100Mbps. Current networks don't meet that, but LTE-Advanced could, and is only a firmware upgrade removed from current LTE systems.
Links: http://en.wikipedia.org/wiki/4G#Requirements and http://en.wikipedia.org/wiki/IMT_Advanced