Yes (I can't think of any exceptions at the moment at least). The enthalpy of combustion is always equal to the change in the enthalpy of formation. You could think about it like this:
The enthalpy of formation is defined as the change in enthalpy in the formation of a compound from its' elements. So, when ethanol is formed, it would've retained heat. When you combust ethanol like in your case, you get CO2 and H2O. Hence, the energy released when you combust ethanol would be the energy needed to form CO2 and H2O subtracted by the energy needed to form ethanol. Obviously, everything has to be balanced.