I think hes just referring to the sound that it's made since the SE. A shitload of people have said there are other new audio editions...that were unbeknownst to them there all along. Like when the Stormtrooper talks before saying "Alright well check it out." That was always there, it was just garbled. You're simply hearing things more clearly...albeit, a littled fuckery has occured with the music and Tarkin scene.