Design change for PS3 controller?

I absolutely love the PS3 controller. I'll be sad if they've changed the design a lot from the Boomerang.

As you say, Sony wouldn't just make a controller for the crack of it. Take the PSP for instance. When I first played on my friends I was trying to hold it like a Dual Shock controller, but once you get used to the fact that it isn't actually a Dual Shock controller you jiggle it about a bit and you find an extremely comfortable position. It's amazing.

The same will have been done with the PS3 controller.