The N95 should be shipping next quarter in the U.S. With a 5MP auto-focus camera, Nokia has a clever solution to the user ergonomics in the different modes of use. There are three different ways to hold the N95 with button placement to match:
1) camera mode. It feels like a normal pocket cam, held horizontally. On the bottom camera image, the slider would actually be pushed in flush, and the blue shutter button is on the top right where you would expect it with a camera.
2) media playback mode: the top camera image shows the slider face that reveals the nav buttons for a side grip
3) telephone use: not shown here. The slider face can slide on its rails off to the left (as well the right) to reveal the dialpad, oriented for a vertical hold of the phone.
2007-2008 should see a flurry of higher quality cameras in phones. In the slim form factors, 3MP with autofocus should lead, and then shutters, zoom and image stabilization will follow.