I thought that the multi-solution pods - they're usually have differently-colored, for I presume marketing reasons - have pockets with different dissolve rates, so that the solutions are dispensed in sequence. I've not tested that, though.
Making part of the pod out of 3mil PVA and bonding it to another part made of 1mil PVA does not sound like unachievable technology to me. In fact, the first Google result for PVA films that I see sells them based on their various dissolution times.
It would be probably very difficult to engineer a good dissolution rate that takes into account the different length and water temperature of the pre-wash cycle of the many many different dishwashers out there. So no, as the video in the sibling comment shows, it's just fancy marketing.
