I haven't kept up with all of the speculation, but I assume there's not much new since the official teaser. I'm hoping there'll be an improvement in using the Finder and Spotlight with metadata. I haven't tried Quicksilver's tagging capability, but it seems to be a nice way to tag and organize your files. For those who use Quicksilver, do you think or know whether the metadata you're creating would be compatible with anything Apple decides to do?