Yeah, it was a pretty awesome game. They have said they will be releasing more DLC and have even detailed some of it.
Street Racer Pack - I'm guessing it will be more races
SWAT Pack - 20 new cop missions
Tactical Soldier Pack - From the description given, it will just be a weapon
Community Gift Pack - something that's "surprising"
They also said they're going to lift the lid on the first batch (yay!) of story-driven DLC on October 14.
http://www.psu.com/a017032/Square-details-Sleeping-Dogs-DLC








