This looks like it will be delayed to 2010 to be honest so I would not expect trophy info for a while. It has had next to no coverage on the run up to its release so I will be very suprised if it actually comes out before christmas not to mention Play has it listed for Feb 2010
Play.com (UK) : Dead Rising 2 : PlayStation3 - Free Delivery
I might be wrong however so sorry if I am I am just going off the lack of coverage.