[...] it's very likely it was a computer generated image and not even a photograph to begin with.
QFT. A friend of mine is a graphic artist who does, among other things, product catalog illustrations. It's standard practice for him to create a 3D computer model and render a photorealistic version of *that* instead of actually photographing the product. The time it takes him to create and texture the model is nothing compared to the time to set up lighting and everything for a photoshoot. That's especially true when you consider the time for retakes because the marketing manager decides the image would look better with the product rotated another 3 degrees counter-clockwise.
I'd be surprised if the close-up pictures of any new product were actually photographs. Model it, then churn out renders from any angle with any lighting effects you want. Yes, even an angle that manages to hide an embarrassing bulge here and there. It's nothing that hasn't been done by marketeers ever since... well, ever since advertising, really.