My God! I've been reading MacRumors for a while now and never posted, but all this negativity from people that don't have a clue made me really angry.
No improvements? New Finder, new Desktop, Quick Look, Cover Flow, Spaces, Time Machine and Stacks in the Dock will be a great productivity enhancement for those who work with lots of files and apps. The ability to see the contents of files without opening the apps is AMAZING. What do you wanted? An automatic Star Trek geektard generator?
So, all of you whiners go cry to your mummies because you don't like the bloody transparent menu bar and buy a copy of Vista or lame Ubuntu and shut up. Grow up people, this was at a DEVELOPERS conference, not some fantasy world where you deluded and sad whiners dream of impossible gadgets (like the improbable Mac Tablet or whatever).
Also, it will work with 32 bit processors!