It's worth noting that originally they said after stock ships, but I think for some people stock movement was so slow that people were having no updates and getting mad. The last update for everyone seems to be a weekly update that everyone got, I was there on the forums as it happened and the thread jump 4-5 pages immediately with people giving updates, and some people literally moving 0 places, which suggests they moved from a "update when new stock comes in" to "update weekly" instead.
People with literally no updates are in the minority which makes me think it's more likely to either be a bug and you're really unlucky. Or that it's something like anti spam catching the email and deleting it.
Did you read what I just said? I just said i'm not getting weekly letters. I only got ONE single email that was sept 29. thats it. Maybe you get weekly update. I don't.