Comcast customers in Atlanta, Nashville, Chicago, Detroit, and Miami will be the first to get Comcast’s new DOCSIS 3.1 modems and faster Internet plans likely to accompany the introduction of the latest cable broadband standard.

Multichannel News reports after field trials in Pennsylvania, Northern California and Atlanta, Comcast is ready to deploy the newest cable modem standard for residential and business class customers to deliver gigabit broadband services delivered over the company’s traditional hybrid fiber-coaxial cable network.

The company expects to begin distributing new modems to customers early this year, starting in Atlanta and Nashville. Comcast is still finalizing pricing on its fastest gigabit-range plans, but the cost is expected to be less than Comcast’s Gigabit Pro offering, which is delivered over fiber-to-the-home service. The cable company now charges Gigabit Pro customers $299.95 a month for the gigabit fiber service with a two-year contract. It is likely Comcast will have to price its cable gigabit offering under $100 a month to compete effectively with Google Fiber and AT&T’s U-verse with GigaPower. Google and AT&T are readying gigabit networks in both of Comcast’s first launch markets.

Comcast exempts Gigabit Pro customers from its growing field trial of data caps, but the company had nothing to say about whether its DOCSIS 3.1-powered plans will receive similar treatment. If not, customers can expect a 300GB monthly allowance.

During the second half of this year, Comcast will expand DOCSIS 3.1 to Chicago, Detroit and Miami. Beyond that, Comcast would not say when the rest of its customers across the country would be upgraded to DOCSIS 3.1 service.

Customers who own their own modems and do not plan to upgrade to a faster plan can continue to use that equipment. Customers looking to upgrade will have to lease a modem from Comcast or buy an authorized DOCSIS 3.1 capable modem, which is expected to cost 30-50% more than traditional DOCSIS 3.0 equipment.