I have yet to upgrade, as my work remote access is not yet compatible. I am, however, looking forward to tabs in Finder. Correct me if I'm wrong, but I believe you cannot look at multiple tabs at once? I would like to have four separate panes, where I can see the destination I'm moving or copying files to. I know I can just tile 4 separate instances, but wouldn't it be easier to have it in one window with the ability to resize the vertical dividers?