I think this just goes to prove yet again that AT&T customer service doesn't find out about anything until the update actually is released.
The bottom line is that AT&T won't allow the update to be certified until they are satisfied with the update, especially given the fact that it will end up on phones they are still selling. What it is they are concerned about testing, who knows. And while people on this community care about the source code and the updated functionality. The vast majority of people who bought their phones from AT&T do not.
It will be interesting to see which phones receive updates starting December 3 per Samsung Canada's announcement this morning https://twitter.com/SamsungMobileCA/...08404155629568, if the i747m is updated that day, then presumably the causes for further delay get harder to justify.