T-Mobile has announced in a short press notice that it has expanded its HSPA+ network overlay to more markets, with customers in Boston, MA; Erie, PA; Fresno, CA; Palm Springs, CA; San Diego, CA; Miami, FL; Richmond, VA; Spokane, WA; and Topeka, KS now able to take advantage of the faster 21Mbps network with appropriate hardware, such as the recently released webConnect Rocket USB modem.