Cingular announced that it launched it's 3G network in the United States called BroadbandConnect.

Cingular BroadbandConnect delivers 400-700Kbps with HSDPA (High Speed Downlink Packet Access) technology. HSDPA is the high-speed evolution of GSM/EDGE, and Cingular's 3G network is supposedly the world's first to use HSDPA.
Currently Cingular BroadbandConnect consists of a laptop modem card, Cingular's Communication Manager software and a Data Connect plan for use on laptops. There are no mobile phones available yet. Cingular will initially launch the BroadbandConnect service in Austin (TX.), Baltimore, Boston, Chicago, Dallas, Houston, Las Vegas, Phoenix, Portland (OR.), Salt Lake City, San Diego, San Francisco, San Jose (CA.), Seattle, Tacoma (Wash.) and Washington D.C.
Customers can purchase either a Sierra Wireless AC860 or Novatel U730 laptop modem card for $99.99, after rebate, when they sign up for a qualifying voice plan and introductory two-year $59.99 Unlimited Data Connect plan. A variety of monthly data plans are available starting at $19.99 for 5 MB.
More details in this Cingular press-release.