The difference between the normal edition and this special edition is that the not-recommended Pie chart has been replaced with the Pi-chart. This Pi-chart can be used to celebrate Pi-day. This special edition is only available for a limited time, so if you want to have this Chart.Guide collectors edition, download it now.
The Pi-day special edition is only available in English. A Dutch edition would not make sense since the name translates as “taart grafiek” which has no relation with the number Pi.