mmmok I understand. I have a question though...I have a black macbook and it runs superfast...and I am sure that a "core animated" finder would run smooth as silk on my beast. BUT what about those that are stuck on g4s? Do you really think apple is going to integrate somthing like this in 10.5???
I'm writing on a 500 MHz PowerMac G4 AGP (1999 or 2000) right now running OSX 10.4.9. It all works, only videos don't really cut it and there's only the old slow USB 1.1. I borrowed that machine because my Macbook is at the shop for repairs.
The Macbook does not have a dedicated graphics card, there's merely a chip that uses (up to) 64 MB of your main memory (RAM) and sucks big time on 3D stuff but works very well on anything else. Core Animation works fine on Macbooks indeed (I have a the developer releases) and should do well on recent Powerbooks and G5 Powermacs. It's already using the graphics card a lot, so it doesn't really matter if you're on a G4 ore Core 2 Duo, the graphics card counts.
As it is right now, exposé in Leopard works about twice as smooth on my 500 MHz Powermac as it does in Tiger. Expect it to get a little better with the final release. I'd say everything that says Apple on it and has more than one GHz should handle Core animation just fine.
But remember Apple is famous for dropping obsolete things very fast. They were fast to ditch the floppy drives and VGA-Connectors in favor of better technology. I assume Leopard will be the last OSX that runs on G4s. OSX 10.6 might be supported for G5s as they can do 64 bit, but don't count on it.
So my answer to your question is: I don't think Leopard will have core animation everywhere, only where it adds to the ease of use, for example when you change the sorting scheme, the items smoothly move to their new position. Windows Vista has lots of Eye Candy, and most people will agree that it actually doesn't add to the ease of use at all, it's just disturbing. Apple is all about keeping it simple yet useful.
Leopard will most probably come out on June 11th with some updated hardware and iLife. iPhone will be either a little sooner or later, but since Apple does not want small developers to make software for it, there's no reason to reveal it at WWDC in my opinion.