Comcast has been promising that DOCSIS 3.0 goodness would be coming to its customers this year, and the cable giant is about to make good. Starting tomorrow, Comcast's new "extreme high-speed" Internet tier will be available to subscribers in the Minneapolis/St. Paul metropolitan area, including Hudson, Wisconsin. Download speeds will top out at 50Mbps while uploads will be capped at 5Mbps. But all of that speed comes at a price: $149.95 per month for consumers, and $199.95 per month for business class service.

Comcast spokesperson Charlie Douglas characterized the price as "competitive," saying that it's roughly the same as what Verizon charges for similar speeds on its FiOS network. That's more or less accurate, but there's a wide gap between the 50/5 tier and the next one down, 8/2, which costs $52.95 per month for video customers. Still, if you're willing to pay for it, the superfast Internet is there.

"This announcement marks the beginning of the evolution from broadband to wideband," said Comcast High-Speed Internet SVP Mitch Bowling. "We believe wideband will usher-in a new era of speed and Internet innovation for today’s digital consumers. Wideband is the future, and it's coming fast."

How fast? Douglas said that the company intends to have DOCSIS 3.0 and the accompanying 50Mbps tier available to 20 percent of its customers by the end of 2008. It should be available nationwide by the middle of 2010. And 50Mbps is only the beginning; Comcast plans to up the speeds to at least 100Mbps in the next couple of years. DOCSIS 3.0 is theoretically capable of 160Mbps speeds, which gives the company some headroom to increase speeds.

There's something for the rest of Comcast's Twin Cities' subscribers as well. Those on the lowest, 6Mbps/384Kbps tier will see their upload speeds jump to 1Mbps. 8Mbps Performance Plus customers will see 1Mbps upload speeds double to 2Mbps.

Since Comcast made its DOCSIS 3.0 intentions official at CES this year, there has been a lot of speculation about where the first deployment would show up. Some analysts believed that those with access to Verizon's FiOS or possibly AT&T's U-Verse networks would be first to see Comcast's "extreme high-speed" offerings. Instead, Comcast is rolling it out in the Twin Cities first, an area served by Qwest and with no superfast broadband competition. "We chose the Twin Cities because they have done an excellent job operationally on other rollouts we have done," Douglas told Ars.

When asked if Comcast would manage its DOCSIS 3.0 network any differently, Douglas reiterated the company's decision to alter its traffic management practices that are currently under investigation by the Federal Communications Commission. "We're committed to changing our network management process from what they are today by the end of the year, and we just need time to work that all out," Douglas said. "We're going to work not just with BitTorrent, but a lot of other P2P companies, the Internet Engineering Task Force, academics, and others to get together and come up with a better way to manage the network."

Geeks around the country have been salivating at the thought of 50Mbps downloads, and it's great to see such high speeds finally spreading beyond Verizon's FiOS network. The price is likely to be a deal-breaker for a lot of people—$149 is a lot to pay for broadband, even if it's blazing fast. It sounds as though Comcast is open to the possibility of dropping the price if the new offering is widely ignored. "It's too early to talk about future price drops," said Douglas. "A lot of this is going to be about consumer demand and the response that we see. We'll adjust based on consumer demand." The company may have to if it expects to get more than a small handful of subscribers to sign up for 50Mbps speeds.