The folks at Cox Communications provided me with an update on last week’s DOCSIS 3.0 deployments in southern Arizona after deadline yesterday. In addition to Sierra Vista, D3 was also rolled out in Tucson, Casa Grande, Coolidge and Florence.

With the latest additions, Cox’s wideband service is now available to more than half a million homes in Arizona. Overall, Cox has announced the availability of DOCSIS 3.0 in all or part of each of the following markets: Louisiana, northern Virginia, New England, Orange County, Calif., Arizona, Las Vegas and Hampton Roads, Va.

Cox’s Ultimate Internet tier features speeds of up to 50 Mbps into customers’ homes and 5 Mbps on the upstream. As is the case in other deployments, the standard price for Cox’s Ultimate Internet D3 service in Arizona is $89.99.

Subscribers to Cox’s Ultimate Internet, Preferred, Premier and Premier Plus data tiers can also temporarily increase their speeds with PowerBoost. The Ultimate tier can hit speeds of up to 55 Mbps with PowerBoost when a subscriber has a large file to download.

Other features of Ultimate Internet include: 10 e-mail accounts, Cox Security Suite power by McAfee, and 5 GB of Media Store and Share online storage and automatic backup.

Cox, the nation’s third-largest cable operator, has nearly 3 million residential and business product subscribers in Arizona, with 2.5 million in the Phoenix area. Cox counts 400,000 product subscribers in southern Arizona.

Cox’s primary competitor throughout Arizona is Qwest. With last week’s announcement that CenturyTel plans on buying Qwest, there’s been speculation that an IPTV service could be deployed in parts of Qwest’s footprint, as well as network upgrades to increase data speeds. Qwest has deployed a 40 Mbps service in limited areas in Arizona.

According to a story in The Denver Post, CenturyTel is trialing an IPTV service in three markets and plans on adding five more next year.

On the other hand, Qwest has historically been opposed to the costly build-out of fiber for IPTV services.