Looks like they are in 67 Markets so they are starting to get back in the race. 
http://newsroom.sprint.com/news/4glte-launchedmarkets.htm
04 March 2013
4G LTE Launched Markets
Sprint introduced its all-new 4G LTE network in July 2012 and now offers service in the following markets: 
 
Altoona, Pa. 
Anderson, Ind. 
Asheville, N.C. 
Athens, Ga. 
Atlanta 
Austin, Texas 
Baltimore 
Barnstable/Hyannis/Mid-Cape, Mass. 
Boston 
Bryan/College Station, Texas 
Calhoun, Ga. 
Carrollton, Ga. 
Chicago/Naperville/Joliet, Ill.  
Clark County, Va./Jefferson County, W.Va. 
Columbia, Tenn. 
Columbus, Ind. 
Dallas 
Elkhart/Goshen, Ind. 
Emporia, Kan. 
Fort Wayne, Ind. 
Fort Worth, Texas 
Framingham, Mass. 
Franklin County, Pa.  
Gainesville, Ga.  
Gary, Ind. 
Gettysburg, Pa. 
Granbury/Hood County, Texas 
Hagerstown, Md./Martinsburg, W.Va.  
Hammond, La. 
Harrisburg/Carlisle/Hershey, Pa. 
Harrisonburg, Va. 
Houston  
Huntsville, Texas 
Hutchinson, Kan.  
Indianapolis/Carmel, Ind.  
Kankakee/Bradley/Bourbonnais, Ill. 
Kansas City, Kan./Mo. 
La Crosse, Wis. 
Lawrence, Kan.  
Manhattan/Junction City, Kan.  
McPherson, Kan.  
Muncie, Ind. 
New Bedford/Fall River, Mass. 
Newnan, Ga.  
Peabody, Mass.  
Rockford, Ill.  
Rome, Ga. 
Salina, Kan.  
San Antonio 
San Juan, Puerto Rico 
Santa Rosa/Petaluma, Calif.  
Sedalia, Mo. 
Shenandoah/Page Counties, Va. 
South Bend/Mishawaka, Ind.  
Southern Puerto Rico: Yauco/Ponce/Coamo/Salinas/Santa Isabel/Guayama 
St. Joseph, Mo. 
Statesville, N.C. 
Temple, Texas 
Topeka, Kan.  
Vallejo/Fairfield, Calif.  
Waco, Texas 
Waukegan/Lake County, Ill.  
Western Puerto Rico: Aguadilla/Isabela/San Germán/Cabo Rojo/Mayagüez 
Wichita Falls, Texas 
Wichita, Kan.  
Winchester, Va.  
York/Hanover, Pa.