At least when you make plat in 2009, you get 6 PMUs
Then when you hit 125k - it is not a major level for 2009 - you only get choices already mentioned.
In spring 2010 you MAY get DM status, but not all DM benefits (e.g., I do not think you can gift gold in 2010 for 125k miles in 2009) the current rules of 2009 require 150k
That's for the 2009 Threshold rewards. If you make 125K in 2009, then in 2010 you can gift Gold. As soon as you reach 150K in 2009, you can gift Gold when you redeem the Threshold rewards via the website.