I renamed the title, but with a slightly different wording, since you can't, in fact, even buy it yet.

It seems that you can buy the upgrade version through "Windows Upgrade Offer" right now, as some other users are reporting. I can confirm that I am able to download the upgrade assistant with my code, but I don't have access to the laptop I am upgrading right now, so I can't actually run it.

Great, thanks matey.