According to D* website, here are the launch markets by month:
Upcoming HD Local Market Launches
August: Augusta, GA.; Chattanooga, Tenn.; Lincoln-Hastings, Neb.; Rochester, N.Y.
September: Baton Rouge, La.; Burlington Vt.-Plattsburgh, N.Y.; Champaign-Springfield-Decatur, Ill.; Mobile AL-Pensacola, Fla.; Myrtle Beach-Florence, S.C.; Richmond-Petersburg, Va. ; South Bend-Elkhart, Ind.; Syracuse, N.Y.; Youngstown, Ohio
October: Boise, Idaho; Charleston, S.C.; Colorado Springs-Pueblo, Colo.; Columbia-Jefferson City, Mo.; Davenport, Iowa-Rock Island, Ill., Moline, Ill.; Dayton, Ohio; Evansville, Ind.; Fort Smith, Ark.; Greenville-New Bern-Washington, N.C.; Harlingen-Brownsville, Texas; Little Rock-Pine Bluff, Ark.; Macon, Ga.; Norfolk-Newport News, Va.; Savannah, Ga.; Springfield-Holyoke, Mass.
November: Des Moines-Ames, Iowa; El Paso, Texas; Fort Wayne, Ind.; La Crosse-Eau Claire, Wis.; Peoria-Bloomington, Ill.; Rockford, Ill.; Sioux Falls, S.D.; Traverse City-Cadillac
December: Bangor, Maine; Beaumont-Port Arthur, Texas; Butte-Bozeman, Mont.; Harrisonburg, Va.; Tallahassee, Fla.