I had my suspicions this would be true when I first read about what the i8910 could do, but this article seems to confirm it. The Omnia HD is powered by an OMAP 3 chip with a dedicated graphics processor. Which kind of OMAP 3 is unclear—there’s a 3430, which is what the Palm Pre is using, and is the most likely candidate for the i8910—but regardless, this means the phone will be incredibly fast and responsive. The dedicated graphics processor will allow all those fancy animations to render and process that much more quickly too.
You can see some of the cool animations and effects (that don’t exist on Nokia’s S60 5.0 devices) in this video: