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
I would be surprised if you did not get all benefits - the standard has been that you accrue miles Jan 1 to Dec 31, then get benefits during the program year of Mar 1 to Feb 28, and as a 'courtesy' if you fly enough miles to make a higher tier than you are currently at mid-year, they raise your status as soon as you do so.
Well, let me rephrase. With DL, nothing would SURPRISE me, but not providing full benefits in the 2010 program year for accruals in the 2009 calendar year would be a significant change (technical issues aside).