no mention of Leopard - possibly due to the fact that Microsoft may just delay a wider release of Windows Vista (already available to businesses) to conjure up an "ultimate destructor" version that copies Leopard further (it has already copied tiger).
However, look at the iPhone. the UI features a most professional looking black glossy color quite prominently throughout the software. The other most prominent color is blue (it wouldn't quite be OS X without blue now would it?), only this blue is the more subdued iTunes hue and not the brightly lit Tiger version.
Although Leopard was ot mentioned at all, I do believe this represents the UI desing direction for Leopard.
I also think future iPods will have the same music UI as the iPhone. Very slick. this will get them away from those Creative patent royalties.
The Zune is officially a laughing stock and Vista is somewhat DOA, considering it only looks better than XP - but is still mostly the same sh'bang.
The iPhone and Leopard are the future of computing. interesting though, how XP and OSX both had a prominently blue theme and now Vista and Leopard (rumored to) have a prominently black theme.