In the of my downloadable direct purchases from Adobe's store, (Photoshop CS5, CS6 and a few others), they did do that.
In the case of your free upgrade, they did not. I'm not sure why. But it's safe bet that if you go through the online store, that's what they will do. So if you decide to gift someone with a $1000 Full version of Photoshop Extended, be aware of that and make arrangements to have it in their name.
I'm sure Trevor won't know what to say when you surprise him with a Mac version.
Gene