This information comes from Okamiden producer Motohide Eshiro…
“As a producer, my concern is what type of experience the players have when playing the game. I don’t want them to feel stressed out; it should be a smooth play experience. So one of the things I thought when we began bringing the game to Nintendo DS is that we had to make sure the camera was right. The original had a poorly-received, fully roaming camera, so on the DS it’s going to be more of a guided experience, the camera is more on a ‘rail,’ though after discussion with Masushita you can move it around a little bit.”
In Okami, players could essentially move the camera in any direction they please, though it wasn’t entirely clear what sort of freedom would be provided in Okamiden. A number of fixed camera angels have been shown in the trailers that have been released up to this point. Based on what Eshiro said, though, you will be able to move it around somewhat.