Don't know if anyone has read this yet but per BTTF.com website and their interview with BTTF producer Bob Gale, the R1 versions of the trilogy will not have the dts tracks that the international versions has. This is so as to free up about 30 minutes per disc for additional extras. I know this will upset dts supporters, myself being one. However I think this is a bigger argument for Universal to add an additional fourth disc to the boxset to house the extras and to keep the dts tracks. I don't know if it is too late in the game but I think we need to petition Universal asap to try to change this.