You can see the original system tray in action (not just a mockup) in the early Chicago betas http://toastytech.com/guis/chic58.html http://toastytech.com/guis/

You can see the original system tray in action (not just a mockup) in the early Chicago betas http://toastytech.com/guis/chic58.html http://toastytech.com/guis/chic58.html