Personally I think it is fake. BTW, the specs on Engadget state 3.2 MP and 2.4x optical zoom.
The reason I think it is a photochop is that every N series has the Nokia brand and model designation at the top. It should say Nokia N97 at the top as opposed to at the bottom. I might be wrong about that as I haven't paid too much attention to branding on all N series phones, but from what I remember it should be at the top.