The diesels in the E-series were actually discontinued at the end of 2010, and there aren't any publicized plans for a return of the diesel in the E's.
Taylor Goodman
Captain - Henrico County (VA) Division of Fire
Fire Chief - Huguenot VFD, Powhatan, VA
Captain - Henrico County (VA) Division of Fire
Fire Chief - Huguenot VFD, Powhatan, VA