T-Mobile has announced a further expansion of its HSPA+ data network overlay with customers in Chicago, IL, Colorado Springs, CO, Ft. Wayne, IN, Louisville, KY, and Raleigh-Durham and Wilmington, NC. Along with the new markets, new HSPA+ compatible devices have been announced in the myTouch 4G launching tomorrow and the Dell Mini 10 4G netbook with built-in HSPA+ modem also available tomorrow.