Will Leopard make SL better or worst?

I know i might be thinking to far ahead, but latest rumours are that Leopard will be released next March, it'll come quick enough and when we all rush to get this upgrade will we be enhancing our SL experience or hindering what is already a clunky experience??

there are big improvements to OpenGL rendering on MacIntel's with dual processors...or so the release notes would have me believe. (Right now, only ONE processor is used for this, even on dual core machines.)

If they (Apple) don't break the video drivers, it should DRAMATICALLY increase the speed on some Mac's.
--and for those of you with NVidea graphics, I have my fingers crossed that the drivers are finally fixed...