Comcast has joined the ultra-fast Internet race, starting with the rollout of its Gigabit Pro service. It looks like ultra-high-speed Internet services are really starting to catch on. The trend started a few years ago with Google Fiber and AT&T Gigapower, and it is spreading among carriers and locations from coast to coast. Comcast’s new 2-Gb service is starting in the Atlanta area next month. The company is planning to roll it out to other cities, but it has not yet named them or given a timetable. As for prices, nothing has been announced.