Similar to Map Packs, X360 Premium members will receive their content drops before PS3 Premium members. All Call of Duty ELITE Premium members will receive monthly content drops for 9 months through the MW3 Content Season, and they will also receive their content drops before non-premium members on their console.

This was copied from the FAQ section of the content drops, the fact that non Elite Xbox players get their DLC before Elite PS3 players is a scam, the fact that no confirmed release date has been given for PS3 players is unacceptable, if this proves to be the case then the hardened edition I purchased in November will be the last purchase I ever make with Activision (fact)

For the record I think MW3 is a great game.

i checked faq before launch and that statement was not present this has been added after launch nothing was mentioned before launch as when asked after launch no-one had answers

Sorry, but Microsoft entered a deal with Activision up to the end of this year (I think?) that means Xbox members get DLC first. I think they would be smart, not to double-cross MS. 

Xbox Premium: 1st

Xbox: 2nd

PS3 Premium: 3rd

PS3 : 4th

I think thats how the DLC has to go due to the deal made. Not unfair at all, PS3 Premiums still get the DLC before non-premium PS3 players...

thats where you are wrong

1st Elite Xbox

2nd Elite PS3

3rd non Elite xbox

4th the rest

FACT

so that pisses on the 2010 deal there

Source

http://investor.activision.com/releasedetail.cfm?ReleaseID=641953

4th paragraph