If there's one thing AT&T's network could use, it's more network. Particularly in major cities (we're looking at you and your dastardly street parking situation, San Francisco), AT&T's 3G network is perpetually overwhelmed, oftentimes forcing users to switch to EDGE just to tweet about how awful the coverage is. Thankfully, the operator is making good on its earlier promise to roll out HSPA 7.2Mbps to select cities, with Charlotte, Chicago, Dallas, Houston, Los Angeles and Miami now destined to get lit this year. Potentially more interesting, however, is the deployment of "additional backhaul capacity to cell sites," which will also support LTE when the time comes. All told, around 2,000 new cell sites should be added before the year's end, and at least a half dozen 7.2Mbps-capable smartphones should be in AT&T's portfolio by the same deadline. Feel free to express your joy in comments below -- that is, if you can get comments to load on your existing 3G connection.

We knew AT&T had an HSPA upgrade in the works, and now the company has announced its plans, with initial rollout beginning later this year and reaching completion in 2011. That will overlap only slightly with LTE, which AT&T plans to put into trials in 2010 and start melting our faces in 2011. The HSPA upgrade takes the network from 3.6Mbps to 7.2Mbps in theoretical speed, and AT&T also plans to nearly double the amount of wireless spectrum it dedicates to 3G in metropolitan areas -- which should come as a relief to city dwellers who haven't managed more than a couple minutes of sustained conversation since mid-2008. To support the increased bandwidth of HSPA, AT&T also plans on adding thousands of new cell site backhaul connections, while also rolling out 3G service to 20 new metro areas and deploying 2,100 new cell sites in total. HSPA-sporting mobile data cards and smartphones will be available "later this year."