Due to Microsoft's claw-like grip on the franchise's DLC, we can't give you an exact date for the content's release on PlayStation 3, but we can confirm that it'll drop at some point after January 24th — the DLC's release date on XBOX 360.
Bowling didn't explain what the first batch of DLC would contain, but said that MW3's content would cover a wider spectrum than previous titles, including Spec Ops and "a variety of things that players have never seen before". Bowling later Tweeted an image from the upcoming DLC, showing a map entitled "Park". It's worth noting that Park popped up in a rumoured DLC leak last month.
Expect Activision to share more details about the DLC in the weeks immediately following Christmas. With an enormous development team dedicated to supporting Call Of Duty as a whole, we're expecting big things from MW3's post-release support.