in case you haven't read about this, there's supposedly a new camera called lytro that lets you focus the photo after taking it (in the example above, from their website, click anywhere on the photo to see how focus shifts). i said supposedly because they're keeping mum on the details. there isn't even a physical description or photo of the camera (surely if they're just protecting the technology, it's not something that can be stolen from showing what the camera looks like?).
what do you think? i'm doing the wait-and-see.