T-Mobile sent out a press release today announcing that they have continued to build out their HSPA+ network that provides download speeds up to 21 Mbps.  As of today, T-Mobile customers in the northeast United States have access to the super fast download and upload speeds, including everyone in Upstate New York (Buffalo, Albany, Rochester, Syracuse), Connecticut (Hartford, New Haven, Milford, and Stamford), and Providence, Rhode Island.  The new network expansion has also been lit up in Memphis, Tennessee and Las Vegas, Nevada.  In addition to all of these expansions, T-Mobile has continued to strengthen their high-speed HSPA+ network in the New York City metropolitan area.  Lastly, T-Mobile has stated that they have plans to continue to flip the high speed switch in Boston and Washington D.C. in the next few weeks, and they will continue to expand their HSPA+ footprint in the coming months to cover 100 major metropolitan areas in the U.S.  Are any of you in one of the areas that just received T-Mobile's HSPA+ speeds?  Tell us your experiences below!