T-Mobile USA today announced a significant expansion of its 42Mbps HSPA+ network footprint to a total of 55 markets. A handful of the new markets includes: Atlanta, Ga.; Chicago, Ill.; Denver, Colo.; Detroit, Mich.; Dallas and Houston, Texas; Los Angeles, Calif.; Miami, Fla.; New Orleans, La.; Phoenix, Ariz.; Pittsburgh, Pa.; Portland, Ore.; and San Francisco, Calif., among others. In addition to the speed increase, T-Mobile is also offering its first product capable of achieving those maximum speeds, the T-Mobile Rocket 3.0, a new laptop stick, which costs $99.99 after rebate with a new contact, or $199.99 without a contract. T-Mobile said that its 4G network reaches more than 200 million Americans in 170 markets. By mid-year, T-Mobile expects that more than 150 million Americans will have access to increased 4G speeds as T-Mobile upgrades its 4G network.