Quoted from Wizcat:The next update of ACDC code will be shipped with the "Special Editions" that are due to be made
Much like TAF had a gold series to commemorate its high sales, Stern will be looking to wring every drop out of the cash cow that is ACDC. I expect the only reason they haven't announced it yet is the controversy it will cause with the LE owners.
and the TAF gold code worked in the older games