I like the Tiger Finder pretty well--it has slowly come a long way--and I LOVE Column View compared to anything else out there! But a new one is still needed, and if Tiger didn't get that, Leopard is sure to. Browsing like iTunes sounds like a great variation on my beloved Column View--and a logical use of the speed of Spotlight.
Having read at Ars that Apple's underlying system now has GREAT metadata capabilities that are barely being tapped, it's good to see hints of more being done with that.
"the only information Apple has provided about Mac OS X 10.5 Leopard is that it will come sometime between late 2006 and 2007 and that it will be Intel compatible"
I would add two more pieces of info we know:
* It will be PowerPC compatible (I know some have worried about that. But we know this due to the overlap with the CPU transition timetable. Not that later versions of OS X can't also be PPC-friendly! Apple's used to maintaining both versions.)
* It will have a TRUE, fully-scalable, resolution-independent user interface, with everything from window borders to stoplight widgets redrawn at much larger bitmap size (and maybe more vector use)--with the option to see everything (menu text, apps, toolbar buttons, everything) larger OR smaller than we see them now. With a single, global, system-wide scaling setting. Great for fitting more windows on a display when you need to--and then scale the other way to make things big and readable when you want that. Ideal for increasingly high res displays. Yay!
We know this because it's in Tiger--but half-finished and hidden. The developer tools can enable it for testing, and Apple has told developers to get their apps ready for this (which makes it odd that I've never heard from any developer about making higher-res UI graphics).
Here's a sample image (with Safari at 200% scaling--BUT imagine that the window borders/buttons were redrawn to be as nice as the fonts are):
http://arstechnica.com/reviews/os/macosx-10.4.ars/20
(Search for "Scalable User Interface" and click to zoom the image to full size.)
And here's Apple's page on the matter:
http://developer.apple.com/releasenotes/GraphicsImaging/ResolutionIndependentUI.html
Pretty clear
And a bonus: re-drawing all the graphics is a necessity for the res-independent UI... so that means Apple is likely to give us more UI consistency at last! Why re-make half a dozen slghtly-different themes? I think they'll settle on just a few. Maybe White, Metal, and Pro--but not so many variations on each! (And Aperture almost seems to be merging Pro with the "New Metal" of iTunes 6.)