One of the most awaited features in the last few years has been Viz in Viz or Viz in Tooltip. That functionality has finally arrived in version 10.5. Watch my new video to see how it works!
I've also uploaded the completed workbook to Tableau Public. It can be viewed and/or downloaded below. (Note: On Tableau Public, you may not notice the tooltips right away - but you can download the workbook and use in on your desktop if you have version 10.5 or higher installed)