T-Mobile's been talking up its 42Mbps network upgrades for some time, but now the 4G network upgrade has finally been rolled out to the public. Beginning today, 55 of T-Mobile's 4G markets spread throughout the U.S. have access to (theoretical) 42Mbps network speeds. You can find the full list of 42Mbps-enabled areas below.

Of course, if you're one of the lucky folks living in one of T-Mobile's new 42Mbps markets, you'll need a device that can take full advantage of those high speeds. That's where the T-Mobile Rocket 3.0 laptop stick comes in. The Rocket 3.0, pictured above, will be T-Mo's first 42Mbps-capable product and will be launching on May 25th for $99.99 after $50 mail-in rebate, two-year contract, and with a minimum of a 2GB mobile broadband plan paired with a voice plan and Easy Pay. It'll also be available sans contract for $199.99.
Although it's kind of a bummer that the only 42Mbps device that'll be available initially is a USB stick, it's pretty awesome to see T-Mobile making its upgraded 4G network available to over 50 markets right off the bat. If you're not a part of the first pack, don't fret. T-Mo says that it expects to expand its 42Mbps network to over 150 million people by the time that the middle of the year rolls around. So, how many of you out there are now in a market with T-Mobile's 42Mbps coverage?
Auburn, Ala.
Phoenix, Ariz.
Bentonville, Ark.
Los Angeles-Long Beach-Santa Ana; Oxnard-Thousand Oaks-Ventura; Salinas; San Francisco-Oakland-Fremont; San Jose-Sunnyvale-Santa Clara; Santa Cruz-Watsonville; Santa Rosa-Petaluma; and Vallejo-Fairfield, Calif.
Boulder; Denver; Fort Collins; and Greeley, Colo.
Deltona-Daytona Beach-Ormond Beach; Gainesville; Jacksonville; Miami; and Tampa, Fla.
Albany; Athens; Atlanta; Augusta; Gainesville; Macon; Savannah; Valdosta; and Warner Robins, Ga.
Honolulu, Hawaii
Chicago, Ill.
Wichita, Kan.
New Orleans, La.
Detroit, Mich.
Omaha, Neb.
Long Island, N.Y.
Durham, N.C.
Oklahoma City and Tulsa, Okla.
Portland, Ore.
Pittsburgh, Pa.
Mayaguez; Ponce; and San Juan, Puerto Rico
Austin; Chattanooga; Dallas; El Paso; and Houston, Texas
Olympia; Seattle; and Spokane, Wash.