I've actually been looking into this game, and I'm definately going to get it when it is released. Two of the most interesting things I read about it in PS Magazine are that 1) anything that protrudes two or more virtual inches is grabbable, meaning there are millions of ways to get to a high point in the game, and 2) the most effective way of escaping guards and "police" is to blend in with the crowd, which you must observe the pattern of in order to blend in with.
So far, the game seems to be very high quality in both fun factor and graphics, but advertisement is advertisement. We can only hope that what we see is what we get.