The upgrades should help with massive file transfers while keeping lag and jittering to a bare minimum, according to the company.Current customers, particularly in Kansas City, Utah and West Des Moines, can try the speedier plans as soon as November if they sign up to become "trusted testers."If you're eligible, Google will ask you how you expect to use the extra bandwidth.Alongside the first network expansions in five years, the upgraded speeds suggest Google is getting back to Fiber's roots.This could help Google pitch its other services, of course, but you might not mind if it gives telecoms an extra incentive to roll out '10G' and similar upgrades sooner than they might have otherwise."