When I ordered my BH (15 May 2013) I was in my dealer's office when he talked to his Heartland contact. The contact said we had just missed a special run so it would not be built until the next one the first week in June. He said they try to consolidate the special orders into one run and do them all at the same time . . examples are different tires, upgraded axles, different size bed and anything else that might not fit their cookie-cutter approach on the standard runs.
Mine actually arrived at the dealer the last part of June, but we didn't get until the first week in July because of the initial PDI conducted by the dealer and the dealer prep.