I tried to upgrade from 16.3 pro to 17 pro using the suggested way on the homepage via the Zorin update app.
It says on three different laptops that there is no ugrade available.
(Two PCs and 2 Laptops were successfully upgraded)
Core/Pro version (GNOME) or Lite version (Xfce)? Core/Pro is ready but Lite has not been released yet.
I was sure I installed Pro,but actually it is lite/xfce. Then I have to wait some more weeks.