I just noticed this too! Except I tried, paid for unnecessary vacations and got Platinum for '13! I'm PISSED!!!
The website showed the benefit in the early part of January like WrightHI said and they did make changes to the 2012 benefit with the added upgrade certs to 4 for 75k miles flyers...What a way to be welcomed to platinum...I also called CS two weeks ago asking where my welcome package was as I received the gold in the mail, they said it was still being processed...I inquired about my platinum level and all of the benefits at the time and they confirmed I would be receiving it all and even gave me instructions on how to redeem the certificates!
HA just released a statement of a $53 Million dollar profit for 2012! You're not losing money, so why take away from your most loyal customers...