You should have received the emails now. If not then the explanation is unfortunately painfully simple. The emails were sent in batches and for that batch the template that was used was incorrect. It was an honest mistake, and after a year of incredibly hard work by everyone here on the release, it was immensely frustrating for us that something we're very proud of has been tainted for a few people. I'm also sure that for some people who received those emails it was quite disappointing too, and perhaps they feel like it was some form of trick. It was not. We try to be really generous with our upgrade policy, giving away a guarantee of free upgrades for a year on new purchases, and not forcing people to upgrade by making the next upgrade eye-wateringly expensive if you happen to not want what's in a particular release.
So once again, we are really sorry to have caused confusion. If you think you are entitled to the upgrade because you either purchased the software in the last 12 months or an upgrade in the last 3 months then send us in a message to our support team and we'll investigate as soon as possible. If you do decide to upgrade I hope you enjoy all of the new features