I wrote to DL and got this.
I know it is not true based on PMs to a few people on this board.
The left hand does not know what the right is doing.
"Actually, the members who received the extra Platinum Medallion Choice Benefits selection were part of the group that were requalifying Platinum Medallion members from the previous year. Meaning, they did not get a Platinum Medallion credentials package during 2009. ...."
Not sure about your specific situation, but the description in the reply is exactly what happened to me. The recent email and addition of the 2010 PM choice benefit met my expectation.