If you have a Wolfram ID, you should be able to log in through the User Portal.
If you do so, then there should be a page with your Wolfram products, and it should have a place to download the update.
This is how it works for my account, anyway. I am not sure how the home edition accounts are set up, but it should be similar.
There have been times when an update or a new version has shown up on my user portal page before I got an e-mail notification.