Well, I pre-ordered Prometheus from Sainsbury's... both the original ad and the order confirmation email stated "Prometheus [DVD+E Copy]", but all I've received is a DVD. There's no note on the paperwork, the case or on the recording as to how to get the E copy.
I've contacted the seller's Customer Service team and they're investigating.
I'm beginning to think that the E copy isn't there and that the original ad was in error, as the current Sainsbury's ad doesn't refer to an E copy.
I had the dvd on pre order from Amazon. When it was first listed on Amazon for such it was listed as having a digital copy. Then aboout three weeks before the dvd came out I had an email from Amazon saying that although the original adverts for the dvd had said there would be a digital copy, that would not now be the case. The dvd I got from Amazon in due course doesn't have a digital copy.
So clearly there was going to be one but then the manufacturers changed their minds