According to Qualcomm, Cingular will be upgrading their CDMA based HSDPA
data network to 7.2 Mb/s in early 2007.

Meanwhile EVDO Rev B, which will allow download speeds of 46 Mb/s is not
scheduled for deployment by Sprint and Verizon until 2008, and Rev C,
which ups the download speeds to 280Mb/s is not scheduled for deployment
until 2009. So HSDPA will be much faster than EV-DO, for 2007 anyway.